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Wikipedia

Sonoma County, California

Sonoma County is a county in the U.S. state of California. As of the 2010 United States Census, its population was 483,878. Its county seat and largest city is Santa Rosa. It is to the north of Marin County and the south of Mendocino County. It is west of Napa County and Lake County.

Sonoma County, California
County of Sonoma
Images, from top down, left to right: Bodega Bay, Sonoma Plaza, Fort Ross
Seal
Motto(s):
"Agriculture, Industry, Recreation"
Interactive map of Sonoma County
Location in the state of California
Coordinates:38°31′N122°56′W /38.51°N 122.93°W /38.51; -122.93Coordinates: 38°31′N122°56′W /38.51°N 122.93°W /38.51; -122.93
CountryUnited States
StateCalifornia
RegionSan Francisco Bay Area
IncorporatedFebruary 18, 1850
Named forthe city of Sonoma
County seat(and largest city)Santa Rosa
Government
• BodySonoma County Board of Supervisors
Area
• Total1,768 sq mi (4,580 km2)
• Land1,576 sq mi (4,080 km2)
• Water192 sq mi (500 km2)
Highest elevation
4,483 ft (1,366 m)
Population
• Total483,878
• Estimate
(2019)
494,336
• Density270/sq mi (110/km2)
Time zoneUTC−8 (Pacific Time Zone)
• Summer (DST)UTC−7 (Pacific Daylight Time)
Area code707
FIPS code06-097
GNIS feature ID1657246
Websitesonomacounty.ca.gov

Sonoma County includes the Santa Rosa-Petaluma Metropolitan Statistical Area, which is part of the San Jose-San Francisco-Oakland, CA Combined Statistical Area. It is the northernmost county in the nine-county San Francisco Bay Area region.

In California's Wine Country region, which also includes Napa, Mendocino, and Lake counties, Sonoma County is the largest producer. It has thirteen approved American Viticultural Areas and more than 350 wineries. The voters have twice approved open space initiatives that have provided funding for public acquisition of natural areas, preserving forested areas, coastal habitat, and other open space. More than 8.4 million tourists visit each year, spending more than $1 billion in 2016.

In 2012, Sonoma County ranked as the 22nd county in the United States in agricultural production. By 1920, Sonoma County was ranked as the eighth most agriculturally productive U.S. county and a leading producer of hops, grapes, prunes, apples, as well as dairy and poultry products, largely due to the extent of available, fertile agricultural land in addition to the abundance of high quality water for irrigation. As of 2009, agriculture was largely divided between two nearly monocultural uses: grapes and pasturage.

Contents

The Pomo, Coast Miwok and Wappo peoples were the earliest human settlers of Sonoma County, between 8000 and 5000 BC, effectively living within the natural carrying capacity of the land. Archaeological evidence of these First people includes a number of occurrences of rock carvings, especially in southern Sonoma County; these carvings often take the form of pecked curvilinear nucleated design.

Spaniards, Russians, and other Europeans claimed and settled in the county from the late 16th to mid-19th century, seeking timber, fur, and farmland. The Russians were the first newcomers to establish a permanent foothold in Sonoma County, with the Russian-American Company establishing Fort Ross on the Sonoma Coast in 1812. This settlement and its outlying Russian settlements came to include a population of several hundred Russian and Aleut settlers and a stockaded fort with artillery. However, the Russians abandoned it in 1841 and sold the fort to John Sutter, settler and Mexican land grantee of Sacramento.

Fort Ross was established by the Russians in 1812.

The Mission San Francisco Solano, founded in 1823 as the last and northernmost of 21 California missions, is in the present City of Sonoma, at the northern end of El Camino Real. El Presidio de Sonoma, or Sonoma Barracks (part of Spain's Fourth Military District), was established in 1836 by Comandante General Mariano Guadalupe Vallejo. His duties included keeping an eye on the Russian traders at Fort Ross, secularizing the Mission, maintaining cooperation with the Native Americans of the entire region, and doling out the lands for large estates and ranches. The City of Sonoma was the site of the Bear Flag Revolt in 1846.

General Mariano Guadalupe Vallejo reviewing his troops in Sonoma, 1846.

Sonoma was one of the original counties when California became a state in 1850, with its county seat originally the town (now city) of Sonoma. However, by the early 1850s, Sonoma had declined in importance in both commerce and population, its county buildings were crumbling, and it was relatively remote. As a result, elements in the newer, rapidly growing towns of Petaluma, Santa Rosa, and Healdsburg began vying to move the county seat to their towns. The dispute ultimately was between the bigger, richer commercial town of Petaluma and the more centrally located, growing agricultural center of Santa Rosa. The fate was decided following an election for the state legislature in which James Bennett of Santa Rosa defeated Joseph Hooker of Sonoma and introduced a bill that resulted in Santa Rosa being confirmed as county seat in 1854. Allegedly, several Santa Rosans, not caring to wait, decided to take action and, one night, rode down the Sonoma Valley to Sonoma, took the county seals and records, and brought them to Santa Rosa. Some of the county's land[which?] was annexed from Mendocino County between 1850 and 1860.

Early post-1847 settlement and development focused primarily on the city of Sonoma, then the region's sole town and a common transit and resting point in overland travel between the region and Sacramento and the gold fields to the east. However, after 1850, a settlement that soon became the city of Petaluma began to grow naturally near the farthest navigable point inland up the Petaluma River. Originally a hunting camp used to obtain game to sell in other markets, by 1854 Petaluma had grown into a bustling center of trade, taking advantage of its position on the river near a region of highly productive agricultural land that was being settled. Soon, other inland towns, notably Santa Rosa and Healdsburg began to develop similarly due to their locations along riparian areas in prime agricultural flatland. However, their development initially lagged behind Petaluma which, until the arrival of railroads in the 1860s, remained the primary commercial, transit, and break-of-bulk point for people and goods in the region. After the arrival of the San Francisco and North Pacific Railroad in 1870, Santa Rosa began to boom, soon equalling and then surpassing Petaluma as the region's population and commercial center. The railroad bypassed Petaluma for southern connections to ferries of San Francisco Bay.[citation needed]

Six nations have claimed Sonoma County from 1542 to the present:[citation needed]

Spanish Empire, 1542, by sea, voyage of Juan Rodríguez Cabrillo as far as the Russian River. Later validated by voyage of Sebastián Vizcaíno, 1602.
Kingdom of England, June 1579, voyage of the Golden Hind under Captain Francis Drake at Bodega Bay (exact location disputed).
Spanish Empire, October 1775, the Sonora at Bodega Bay, under Lt. Juan Francisco de la Bodega y Quadra, until 1821, when Mexico gained independence from Spain.
Russian Empire, by Russian-American Company expedition led by Ivan Alexandrovich Kuskov, the founder of Fort Ross and, from 1812 to 1821, its colonial administrator. Note: There is an overlap of rule with the Mexican Empire (next item), until the Russians sold Fort Ross in 1841 to John Sutter, before leaving the area in 1842.
First Mexican Empire, August 1821, under Emperor Agustin Iturbide (October 1822, probable time new flag raised in California), until 1823.
Mexican Republic, 1823 until June 1846.
California Republic, June 14, 1846 until July 9, 1846.
United States of America, July 9, 1846 to present.

Sonoma County was severely shaken by the 1906 San Francisco earthquake. The displacements along the fault averaged 15 feet (4.6 m).

In October 2017, the county was greatly affected by the Tubbs Fire and the Nuns Fire. In late October and early November 2019, the Kincade Fire burned 77,758 acres (31,468 ha), almost all in Sonoma County. In August and September 2020, the Walbridge Fire burned 55,209 acres (22,342 ha) in the western part of the county; then in September-October the Glass fire affected the city of Santa Rosa and ultimately destroying 1,000+ buildingsThe county also had a wildfire in the 1870s that is compared to the Hanley fire and Tubbs fire because they burned in the same path.

The Sonoma County Landmarks Commission recognizes nearly 200 formal historical landmarks and the Sonoma County Historical Society counts 380 landmarks recognized by several agencies.

Pomo girl c. 1924, by Edward S. Curtis' from The North American Indian volume 14.

According to the book California Place Names, "The name of the Indian tribe is mentioned in baptismal records of 1815 as Chucuines o Sonomas, by Chamisso in 1816 as Sonomi, and repeatedly in Mission records of the following years."

According to the Coast Miwok and the Pomo tribes that lived in the region, Sonoma translates as "valley of the moon" or "many moons". Their legends detail this as a land where the moon nestled, hence the names Sonoma Valley and the "Valley of the Moon." This translation was first recorded in an 1850 report by General Mariano Guadalupe Vallejo to the California Legislature. Jack London popularized it in his 1913 novel The Valley of the Moon.

In the native languages there is also a constantly recurring ending tso-noma, from tso, the earth; and noma, village; hence tsonoma, "earth village." Other sources say Sonoma comes from the Patwin tribes west of the Sacramento River, and their Wintu word for "nose". Per California Place Names, "the name is doubtless derived from a Patwin word for 'nose', which Padre Arroyo (Vocabularies, p. 22) gives as sonom (Suisun)." Spaniards may have found an Indian chief with a prominent protuberance and applied the nickname of Chief Nose to the village and the territory. The name may have applied originally to a nose-shaped geographic feature.

Jesse Sawyer argues that it is from Wappo tso-noma, meaning "redwood place."

Hood Mountain with vineyards in foreground.

According to the U.S. Census Bureau, the county has an area of 1,768 square miles (4,580 km2), of which 1,576 square miles (4,080 km2) is land and 192 square miles (500 km2) (10.9%) is water.

The county lies in the North Coast Ranges of northwestern California. Its ranges include the Mayacamas and the Sonoma Mountains, the southern peak of the latter being the prominent landform Sears Point. The highest peak in the Mayacamas within the county and the highest peak in the County is Mt. Saint Helena. It has uncommon occurrences of pygmy forest, dominated by Mendocino cypress. The highest peak of the Sonoma Mountains is Sonoma Mountain itself, which boasts two significant public access properties: Jack London State Historic Park and Fairfield Osborn Preserve.

The county includes the City of Sonoma and the Sonoma Valley, in which the City of Sonoma is located. However, these are not synonymous. The City of Sonoma is merely one of nine incorporated cities in the county. The Sonoma Valley is just the southeastern portion of the county, which includes many other valleys and geographic zones, including the Petaluma Valley, the Santa Rosa Plains, the Russian River, the Alexander Valley, and the Dry Creek Valley.

Distinct habitat areas within the county include oak woodland, redwood forest, northern coastal scrub, grassland, marshland, oak savanna and riparian woodland. The California oak woodland in the upper Yulupa Creek and Spring Creek watersheds in Annadel State Park is a relatively undisturbed ecosystem with considerable biodiversity. These forested areas have been characterized as some of the best examples of such woodlands. An unusual characteristic of these forests is the high content of undisturbed prehistoric bunchgrass understory, testifying to the absence of historic grazing or other agriculture.

Trees of the oak woodland habitat include Pacific madrone, Douglas fir, coast live oak, Garry oak, and California laurel. Common understory plants are toyon, poison oak, and, at the fringes, coast silk-tassel.

Climate

Sonoma County's Dry Creek Valley

Sonoma County, as is often the case with coastal counties in California, has a great degree of climatic variation and numerous, often very different, microclimates. Key determining factors for local climate are proximity to the ocean, elevation, and the presence and elevation of hills or mountains to the east and west. This is in large part due to the fact that, as throughout California, the prevailing weather systems and wind come normally from the Pacific Ocean, blowing in from the west and southwest, so that places closer to the ocean and on the windward side of higher elevations tend to receive more rain from autumn through spring and more summer wind and fog. This itself is partly a result of the presence of high and low pressures in inland California, with persistent high summer temperatures in the Central Valley, in particular, leading to low pressures, drawing in moist air from the Pacific, cooling into damp cool breezes and fog over the cold coastal water. Those places further inland and particularly in the lee of significant elevations tend to receive less rain and less, in some cases no, fog in the summer.

The coast itself is typically cool and moist throughout summer, often foggy, with fog generally blowing in during the late afternoon and evening until it clears in the later morning becoming sunny, before repeating. Coastal summer highs are typically in the mid to high 60s, warming to the low 70s further from the ocean.

Certain inland areas, including the Petaluma area and the Santa Rosa Plain, are also prone to this normal fog pattern in general. However, they tend to receive the fog later in the evening, the fog tends to be more short-lived, and mid-day temperatures are significantly higher than they are on the coast, typically in the low 80s F. This is particularly true for Petaluma, Cotati, and Rohnert Park, and, only slightly less so, Santa Rosa, Windsor, and Sebastopol. In large part, this results from lower elevations and the prominent Petaluma Gap in the hills between the ocean to the west and the Petaluma Valley and Santa Rosa Plain to the east.

Areas north of Santa Rosa and Windsor, with larger elevations to the west and further from the fog path, tend to receive less fog and less summer marine influence. Healdsburg, to the north of Windsor, is less foggy and much warmer, with summer highs typically in the higher 80s to about 90 °F (32 °C). Sonoma and the Sonoma Valley, east of Petaluma, are similar, with highs typically in the very high 70s F to 80 °F (27 °C). This is in part due to the presence of the Sonoma Mountains between Petaluma and Sonoma. Cloverdale, far to the north and outside of the Santa Rosa Plain, is significantly hotter than any other city in the county, with rare evening-morning fog and highs often in the 90s, reaching 100 °F (38 °C) much more frequently than the other cities. Notably, however, the temperature differences among the different areas of the county are greatest for the highs during mid-day, with the diurnal lows much more even throughout the entire county. The lows are closely tied to the evening-morning cooling marine influence, in addition to elevation, bringing similarly cool temperatures to much of region.

These weather patterns contribute to high diurnal temperature fluctuations in much of the county. In summer, daily lows and highs are typically 30–40 °F apart inland, with highs for Petaluma, Cotati, Rohnert Park, Santa Rosa, Windsor, and Sebastopol typically being in the very low 80s F and lows at or near 50 °F (10 °C). Healdsburg and the City of Sonoma, with similar lows, have even greater diurnal fluctuations due to their significantly warmer highs. On the other hand, the coast, with strong marine influence, tends to have low diurnal temperature fluctuation, with summer highs much cooler than the inland towns, typically 65–75 °F, yet lows in the high 40s to low 50s F, fairly comparable to most inland towns.

These microclimates are evident during the rainy seasons as well, with great variation in the amount of rainfall throughout the county. Generally, all of Sonoma County receives a fair amount of rain, with much of the county receiving between about 25 in (640 mm), comparable to areas such as Sonoma and Petaluma, and roughly 30 in (760 mm) normal for Santa Rosa. However, certain areas, particularly in the north-west portion of the county around the Russian River, receive significantly more rainfall. The Guerneville area, for example, typically receives about 50 in (1,300 mm) of rain a year, with annual rain occasionally going as high as 70 in (1,800 mm). Nearby Cazadero typically receives about 72 in (1,800 mm) of rain a year, many times has reached over 100 in (2,500 mm) a year, and sometimes over 120 in (3,000 mm) of rain in a year. The Cazadero region is the second wettest place in California after Gasquet.

Snow is exceedingly rare in Sonoma County, except in the higher elevations on and around the Mayacamas Mountains, particularly Mount Saint Helena, and Cobb Mountain, whose peak is in Lake County.

Ocean, bays, rivers and streams

Goat Rock Beach as viewed from the Jenner Cliffs looking south, showing the mouth of the Russian River at the Pacific Ocean.

Sonoma County is bounded on the west by the Pacific Ocean, and has 76 miles (122 km) of coastline. The major coastal hydrographic features are Bodega Bay, the mouth of the Russian River, and the mouth of the Gualala River, at the border with Mendocino County. All of the county's beaches were listed as among the cleanest in the state in 2010.

Six of the county's nine cities, from Healdsburg south through Santa Rosa to Rohnert Park and Cotati, are in the Santa Rosa Plain. The northern Plain drains directly to the Russian River, or to a tributary; the southern Plain drains to the Russian River via the Laguna de Santa Rosa.

Russian River

Much of central and northern Sonoma County is in the watershed of the Russian River and its tributaries. The river rises in the coastal mountains of Mendocino County, north of the city of Ukiah, and flows into Lake Mendocino, a major flood control reservoir. The river flows south from the lake through Mendocino to Sonoma County, paralleled by Highway 101. It turns west at Healdsburg, receiving water from Lake Sonoma via Dry Creek, and empties into the Pacific Ocean at Jenner.

Laguna de Santa Rosa

The Laguna de Santa Rosa is the largest tributary of the Russian River. It is 14 miles (23 km) long, running north from Cotati to the Russian River near Forestville. Its flood plain is more than 7,500 acres (30 km2). It drains a 254-square-mile (660 km2) watershed, including most of the Santa Rosa Plain.

The Laguna de Santa Rosa Foundation says:

The Laguna de Santa Rosa is Sonoma County's richest area of wildlife habitat, and the most biologically diverse region of Sonoma County (itself the second-most biologically diverse county in California)... It is a unique ecological system covering more than 30,000 acres (120 km2) and comprisedof a mosaic of creeks, open water, perennial marshes, seasonal wetlands, riparian forests, oak woodlands, and grasslands... As the receiving water of a watershed where most of the county's human population lives, it is a landscape feature of critical importance to Sonoma County's water quality, flood control, and biodiversity.

The Laguna's largest tributary is Santa Rosa Creek, which runs through Santa Rosa. Its major tributaries are Brush Creek, Mark West Creek, Matanzas Creek, Spring Creek, and Piner Creek. Santa Rosa Creek was shown to be polluted in Sonoma county first flush results.

Other water bodies

The boundary with Marin County runs from the mouth of the Estero Americano at Bodega Bay, up Americano Creek, then overland to San Antonio Creek and down the Petaluma River to its mouth at the northwest corner of San Pablo Bay, which adjoins San Francisco Bay. The southern edge of Sonoma County comprises the northern shore of San Pablo Bay between the Marin County border at the Petaluma River and the border with Solano County at Sonoma Creek. Sonoma County has no incorporated communities directly on the shore of San Pablo Bay. At the present, there is only a private marina with related facilities called Port Sonoma near the mouth of the Petaluma River. However, the Petaluma River, which flows into San Pablo Bay, is navigable up to the city of Petaluma.

The Petaluma River, Tolay Creek, and Sonoma Creek enter the bay at the county's southernmost tip. The intertidal zone where they join the bay is the vast Napa Sonoma Marsh.

Americano Creek, the Petaluma River, Tolay Creek, and Sonoma Creek are the principal streams draining the southern portion of the county. The Sonoma Valley is drained by Sonoma Creek, whose major tributaries are Yulupa Creek, Graham Creek, Calabazas Creek, Schell Creek, and Carriger Creek; Arroyo Seco Creek is tributary to Schell Creek. Other creeks include Foss, Felta, and Mill.

Lakes and reservoirs in the county include Lake Sonoma, Tolay Lake, Lake Ilsanjo, Santa Rosa Creek Reservoir, Lake Ralphine, and Fountaingrove Lake.

Marine protected areas of Sonoma County

Like underwater parks, these marine protected areas help conserve ocean wildlife and marine ecosystems.

Threatened/endangered species

A number of endangered plants and animals are found in Sonoma County, including the California clapper rail (Rallus longirostris obsoletus), salt marsh harvest mouse (Reithrodontomys raviventris), northern red-legged frog (Rana aurora), Sacramento splittail (Pogonichthys macrolepidotus), California freshwater shrimp (Syncaris pacifica), showy Indian clover (Trifolium amoenum), and Hickman's potentilla (Potentilla hickmanii).

Species of special local concern include the California tiger salamander (Ambystoma californiense) and some endangered plants, including Burke's goldfields (Lasthenia burkei), Sebastopol meadowfoam (Limnanthes vinculans), and Sonoma sunshine or Baker's stickyseed (Blennosperma bakeri).

Endangered species that are endemic to Sonoma County include Sebastopol meadowfoam, Sonoma sunshine, and Pitkin Marsh lily (Lilium pardalinum subsp. pitkinense).

The Sonoma County Water Agency has had a Fisheries Enhancement Program since 1996. Its website says:

"The primary focus of the FEP is to enhance habitat for three salmonids: Steelhead, Chinook salmon, and Coho salmon. These three species are listed as threatened under the U.S. Endangered Species Act. The California Department of Fish and Game considers the Coho salmon endangered."

Adjacent counties

National protected area

Major highways

U.S. Route 101

U.S. Route 101 is the westernmost Federal highway in the U.S.A. Running north/south through the states of California, Oregon, and Washington, it generally parallels the coastline from the Mexico–US border to the Canada–US border. Highway 101 links seven of the county's nine incorporated cities: Cloverdale, Healdsburg, Windsor, Santa Rosa, Rohnert Park, Cotati, and Petaluma. It is a freeway for its entire length within the county.

The four-lane sections of the highway have been heavily congested during peak commute hours for many years and work is being done to widen part of the highway to six lanes. The segment from north of Petaluma (at Old Redwood Highway/Petaluma Boulevard North exit) to Windsor has been fully widened, as has the segment from the Petaluma River bridge to the Marin County border. The two new inner lanes are designated for vehicles with two or more occupants during commute hours. Work is being done around Petaluma to finish the widening within Sonoma County; the widening also involves upgrading the highway to full freeway standards.

State Route 1

Within Sonoma County, Highway 1 follows the coastline from the Mendocino County border, at the mouth of the Gualala River, to the Marin County border, at the Estero Americano (Americano Creek), southeast of Bodega Bay.

State Route 12

State Route 12 in Sonoma (Broadway)

Highway 12 runs eastward from its intersection with Highway 116 in Sebastopol to Santa Rosa. There it turns south through the Valley of the Moon to Sonoma, then east into Napa County. The four-lane freeway section within Santa Rosa, between Fulton Road and Farmers Lane, is called the Luther Burbank Memorial Highway. That section, especially where it crosses Highway 101, is severely congested during peak commute hours.

The two-lane Bodega Highway runs west from the intersection of Highways 12 and 116 in Sebastopol, through the coastal hills to its intersection with Highway 1, east of Bodega Bay. East of Santa Rosa, Highway 12 is also called Sonoma Highway; and east of the City of Sonoma, Carneros Highway.

State Route 37

Highway 37 connects Highway 101 at Novato, in Marin County, with Interstate 80 in Vallejo, in Solano County, at the top of San Pablo Bay. Within Sonoma County, it is also called Sears Point Road.

State Route 116

Highway 116 is a winding, two-lane rural route that runs from Jenner, at the mouth of the Russian River on the coast, southeast to Arnold Drive near Sonoma. It is also called Guerneville Highway, between Guerneville and Forestville; Gravenstein Highway North, between Forestville and Sebastopol; and Gravenstein Highway South, between Sebastopol and Stony Point Road, west of Rohnert Park. East of Petaluma it is called Lakeville Highway, then Stage Gulch Road.

State Route 121

Highway 121 is a two-lane rural route running from Highway 37 near Sears Point Raceway to Highway 128 in Lake Berryessa, in Napa County.

State Route 128

The northernmost section of Highway 128 is a two-lane, rural route running southeast from Highway 101 at Geyserville, north of Healdsburg, through the Alexander Valley and into Napa County.

Public transportation

  • Sonoma County Transit is the countywide transit operator, providing service to all cities in Sonoma County.
  • CityBus operates within the city limits of Santa Rosa.
  • The cities of Cloverdale and Petaluma also provide their own local bus service.
  • Golden Gate Transit connects Santa Rosa and points south with Marin County and San Francisco.
  • Mendocino Transit Authority runs north from Santa Rosa to Ukiah (via US 101) and to the coast (via California Routes 12 and 1).
  • Sonoma–Marin Area Rail Transit (SMART) is a commuter rail line eventually planned to go between Larkspur in Marin County and Cloverdale in Sonoma County. As of December 2020[update] the line operates between Larkspur and the Sonoma County Airport.

Airports

The Charles M. Schulz - Sonoma County Airport is at 2290 Airport Boulevard, west of Highway 101, between Santa Rosa and Windsor. Its main runway is 5,115 feet (1,559 m) long and 150 feet (46 m) wide, and can accommodate planes up to 95,000 pounds (43,000 kg) maximum gross takeoff weight. It offers fuel, major maintenance, hangar space, and tie-downs for local and transient aircraft. Alaska Airlines, American Airlines, and United Airlines offer regular daily commercial flights.

There are five general aviation airports within the county:

Railroads

Historical railroads of Sonoma County
Mesa Grande train station, about 1910

In 1864, the Petaluma and Haystack Railroad connected the city of Petaluma to a ferry landing at the head of navigation on the Petaluma River.

In 1870, the San Francisco and North Pacific Railroad (SF&NP) connected the City of Santa Rosa to ferry connections at Donahue landing on the Petaluma River. Rail service was extended north to Healdsburg in 1871 and Cloverdale in 1872. In 1884 the railroad was extended south to an alternate ferry connection in Tiburon. This rail line serves as the primary route of Sonoma–Marin Area Rail Transit.

The 3-foot-gauge North Pacific Coast Railroad extended northward in 1876 from a ferry connection at Sausalito through Valley Ford, Freestone, and Occidental to Monte Rio on the lower Russian River. Service was extended to Duncans Mills in 1877 and Cazadero in 1885. The standard gauge Fulton and Guerneville Railroad left the SF&NP at Fulton to reach Korbel in 1876 and Guerneville in 1877. Standard-gauge rails were extended down-river to Duncan Mills in 1909 after the Northwestern Pacific Railroad merger, and narrow-gauge service was discontinued in 1930. The standard-gauge route became River Road after tracks were removed in 1935.

The unique Sonoma Valley Prismoidal Railway linked the city of Sonoma to bay ferries in 1876 and was replaced in 1879 by the 3-foot (0.91 m)-gauge Sonoma Valley Railroad to a ferry landing near the mouth of the Petaluma River. Service was extended from Sonoma to Glen Ellen in 1882. The southern end of the line was extended westward in 1888 to a connection with the SF&NP at Ignacio. This line was converted to standard-gauge in 1890 and remains (in 2018) as Sonoma County's connection to the national rail system at Schellville.

Southern Pacific subsidiary Santa Rosa and Carquinez Railroad extended eastward in 1888 to link Santa Rosa with the national rail system. The portion between Sonoma and Santa Rosa was dismantled in the 1940s after interchange shifted to the former Sonoma Valley line.

A SF&NP branch line from Santa Rosa brought rail service to Sebastopol in 1890. The Petaluma and Santa Rosa Railroad extended interurban service north from a ferry connection in Petaluma to reach Sebastopol in 1904, Santa Rosa in 1905, and Forestville in 1906. Portions of this line were converted to the Joe Rodota Trail after tracks were removed in the 1980s.

The Sonoma–Marin Area Rail Transit commuter rail line inaugurated passenger service on August 25, 2017, utilizing the Northwestern Pacific Railroad right-of-way from Sonoma County Airport station to Larkspur Landing in Marin. The system is planned to extend to Cloverdale Depot.

The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense in the year of 2009.

Population and crime rates
Population 478,551
Violent crime 1,917 4.01
Homicide 9 0.02
Forcible rape 163 0.34
Robbery 318 0.66
Aggravated assault 1,427 2.98
Property crime 4,537 9.48
Burglary 1,993 4.16
Larceny-theft 6,671 13.94
Motor vehicle theft 786 1.64
Arson 85 0.18

Cities by population and crime rates

Cities by population and crime rates
City Population Violent crimes Violent crime rate
per 1,000 persons
Property crimes Property crime rate
per 1,000 persons
Cloverdale 8,775 6 0.68 157 17.89
Cotati 7,398 54 7.30 85 11.49
Healdsburg 11,458 18 1.57 271 23.65
Petaluma 58,995 167 2.83 822 13.93
Rohnert Park 41,716 192 4.60 770 18.46
Santa Rosa 170,862 636 3.72 3,818 22.35
Sebastopol 7,512 8 1.06 170 22.63
Sonoma 10,841 27 2.49 193 17.80
Windsor 27,293 67 2.45 318 11.65

2011

Population, race, and income
Total population 478,551
White 390,474 81.6%
Black or African American 7,161 1.5%
American Indian or Alaska Native 5,962 1.2%
Asian 19,249 4.0%
Native Hawaiian or other Pacific Islander 1,513 0.3%
Some other race 37,977 7.9%
Two or more races 16,215 3.4%
Hispanic or Latino (of any race) 116,222 24.3%
Per capita income $33,119
Median household income $64,343
Median family income $78,227

Places by population, race, and income

Places by population and race
Place Type Population White Other
Asian Black or African
American
Native American
Hispanic or Latino
(of any race)
Bloomfield CDP 186 93.0% 0.0% 7.0% 0.0% 0.0% 3.2%
Bodega CDP 132 100.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Bodega Bay CDP 772 87.2% 3.5% 9.3% 0.0% 0.0% 4.9%
Boyes Hot Springs CDP 7,284 74.8% 20.8% 3.4% 0.0% 1.1% 52.7%
Carmet CDP 22 100.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Cazadero CDP 305 92.8% 7.2% 0.0% 0.0% 0.0% 8.9%
Cloverdale City 8,390 81.1% 13.6% 4.6% 0.2% 0.5% 30.2%
Cotati City 7,154 87.9% 6.2% 4.4% 1.2% 0.2% 10.5%
Eldridge CDP 1,899 74.6% 22.9% 1.8% 0.5% 0.2% 19.0%
El Verano CDP 3,555 80.6% 13.3% 5.5% 0.0% 0.5% 28.2%
Fetters Hot Springs-Agua Caliente CDP 4,034 88.7% 7.1% 2.9% 0.7% 0.6% 41.2%
Forestville CDP 3,268 86.6% 10.0% 3.1% 0.0% 0.2% 10.7%
Fulton CDP 691 54.6% 36.0% 9.4% 0.0% 0.0% 36.0%
Geyserville CDP 1,024 58.1% 37.6% 2.4% 0.0% 1.9% 56.7%
Glen Ellen CDP 549 91.4% 7.3% 0.0% 1.3% 0.0% 10.4%
Graton CDP 1,621 83.0% 14.4% 0.0% 0.3% 2.3% 22.8%
Guerneville CDP 4,187 90.6% 5.4% 0.3% 2.1% 1.6% 11.6%
Healdsburg City 11,161 79.1% 17.7% 0.3% 0.8% 2.2% 33.0%
Jenner CDP 113 100.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Kenwood CDP 509 80.6% 17.3% 2.2% 0.0% 0.0% 18.3%
Larkfield-Wikiup CDP 8,569 88.3% 7.7% 3.3% 0.2% 0.5% 17.6%
Monte Rio CDP 1,044 91.9% 5.9% 0.8% 0.0% 1.4% 2.4%
Occidental CDP 1,264 88.8% 5.9% 4.0% 1.3% 0.0% 4.8%
Penngrove CDP 2,428 90.6% 8.6% 0.8% 0.0% 0.0% 12.8%
Petaluma City 57,265 83.5% 9.2% 5.1% 1.0% 1.1% 21.3%
Rohnert Park City 40,741 78.6% 11.5% 6.6% 2.0% 1.4% 23.3%
Roseland CDP 6,628 67.6% 27.1% 2.9% 1.8% 0.5% 58.5%
Salmon Creek CDP 95 93.7% 0.0% 0.0% 0.0% 6.3% 0.0%
Santa Rosa City 164,976 78.2% 12.5% 5.1% 2.3% 1.9% 28.2%
Sea Ranch CDP 812 97.9% 0.7% 1.4% 0.0% 0.0% 7.4%
Sebastopol City 7,359 88.8% 6.8% 1.2% 0.7% 2.5% 10.8%
Sereno del Mar CDP 119 100.0% 0.0% 0.0% 0.0% 0.0% 0.0%
Sonoma City 10,430 87.5% 8.0% 2.1% 0.4% 1.9% 16.6%
Temelec CDP 1,510 97.3% 1.7% 1.1% 0.0% 0.0% 10.2%
Timber Cove CDP 165 100.0% 0.0% 0.0% 0.0% 0.0% 13.9%
Valley Ford CDP 85 100.0% 0.0% 0.0% 0.0% 0.0% 43.5%
Windsor Town 26,229 80.1% 12.7% 3.0% 0.6% 3.7% 32.2%
Places by population and income
Place Type Population Per capita income Median household income Median family income
Bloomfield CDP 186 $31,592 $85,515 $85,735
Bodega CDP 132 $26,221 $21,750 $40,972
Bodega Bay CDP 772 $52,512 $73,250 $122,500
Boyes Hot Springs CDP 7,284 $24,218 $47,123 $48,382
Carmet CDP 22
Cazadero CDP 305 $32,407 $46,875 $53,500
Cloverdale City 8,390 $25,745 $56,649 $71,233
Cotati City 7,154 $38,863 $62,969 $77,350
Eldridge CDP 1,899 $28,397 $94,688 $105,724
El Verano CDP 3,555 $27,189 $49,731 $53,409
Fetters Hot Springs-Agua Caliente CDP 4,034 $29,849 $59,315 $63,879
Forestville CDP 3,268 $32,773 $53,095 $65,135
Fulton CDP 691 $25,734 $42,692 $125,417
Geyserville CDP 1,024 $23,915 $49,375 $51,250
Glen Ellen CDP 549 $33,389 $45,558 $56,250
Graton CDP 1,621 $36,676 $77,574 $91,946
Guerneville CDP 4,187 $30,594 $39,459 $61,250
Healdsburg City 11,161 $34,031 $63,666 $72,235
Jenner CDP 113 $45,432 $81,161 $42,422
Kenwood CDP 509 $76,096 $56,250 $144,318
Larkfield-Wikiup CDP 8,569 $33,798 $71,046 $92,243
Monte Rio CDP 1,044 $21,861 $31,667 $41,544
Occidental CDP 1,264 $46,895 $67,205 $104,375
Penngrove CDP 2,428 $39,270 $84,315 $98,407
Petaluma City 57,265 $35,111 $76,185 $92,192
Rohnert Park City 40,741 $28,203 $56,950 $71,726
Roseland CDP 6,628 $20,518 $54,255 $60,104
Salmon Creek CDP 95 $70,087 $80,694 $80,694
Santa Rosa City 164,976 $30,085 $60,850 $69,944
Sea Ranch CDP 812 $48,998 $57,227 $79,063
Sebastopol City 7,359 $35,459 $60,000 $85,391
Sereno del Mar CDP 119 $120,019 $162,986 $162,986
Sonoma City 10,430 $42,261 $63,262 $104,942
Temelec CDP 1,510 $37,406 $39,274 $44,960
Timber Cove CDP 165 $39,092 $42,143 $58,250
Valley Ford CDP 85
Windsor Town 26,229 $31,009 $77,157 $86,425

2010

Historical population
Census Pop.
1850560
186011,8672,019.1%
187019,81967.0%
188025,92630.8%
189032,72126.2%
190038,48017.6%
191048,39425.8%
192052,0907.6%
193062,22219.5%
194069,05211.0%
1950103,40549.7%
1960147,37542.5%
1970204,88539.0%
1980299,68146.3%
1990388,22229.5%
2000458,61418.1%
2010483,8785.5%
2019 (est.)494,3362.2%
U.S. Decennial Census
1790–1960 1900–1990
1990–2000 2010–2015

The 2010 United States census reported that Sonoma County had a population of 483,878. The racial makeup of Sonoma County was 371,412 (76.8%) White, 7,610 (1.6%) African American, 6,489 (1.3%) Native American, 18,341 (3.8%) Asian, 1,558 (0.3%) Pacific Islander, 56,966 (11.8%) from other races, and 21,502 (4.4%) from two or more races. Hispanic or Latino of any race were 120,430 persons (24.9%).

Population reported at 2010 United States Census
The County
Total
Population
White
African
American
Native
American
Asian
Pacific
Islander
other
races
two or
more races
Hispanic
or Latino
(of any race)
Sonoma County 483,878 371,412 7,610 6,489 18,341 1,558 56,966 21,502 120,430
Incorporated
cities and towns
Total
Population
White
African
American
Native
American
Asian
Pacific
Islander
other
races
two or
more races
Hispanic
or Latino
(of any race)
Cloverdale 8,618 6,458 48 156 98 7 1,530 321 2,824
Cotati 7,265 5,929 122 75 283 30 427 399 1,255
Healdsburg 11,254 8,334 56 205 125 18 2,133 383 3,820
Petaluma 57,941 46,566 801 353 2,607 129 5,103 2,382 12,453
Rohnert Park 40,971 31,178 759 407 2,144 179 3,967 2,337 9,068
Santa Rosa 167,815 119,158 4,079 2,808 8,746 810 23,723 8,491 47,970
Sebastopol 7,379 6,509 72 60 120 19 298 301 885
Sonoma 10,648 9,242 52 56 300 23 711 264 1,634
Windsor 26,801 19,798 227 594 810 51 4,052 1,269 8,511
Census-designated
places
Total
Population
White
African
American
Native
American
Asian
Pacific
Islander
other
races
two or
more races
Hispanic
or Latino
(of any race)
Bloomfield 345 282 0 0 4 0 52 7 62
Bodega 220 209 0 2 2 0 0 7 9
Bodega Bay 1,077 951 2 4 33 4 49 34 126
Boyes Hot Springs 6,656 4,505 48 91 84 9 1,674 245 3,270
Carmet 47 43 0 0 1 0 0 3 0
Cazadero 354 318 1 7 5 0 5 18 23
El Verano 4,123 3,054 22 22 101 12 717 195 1,559
Eldridge 1,233 988 10 3 36 6 144 46 325
Fetters Hot Springs-Agua Caliente 4,144 2,926 25 39 68 8 895 183 1,925
Forestville 3,293 2,914 32 36 53 6 153 99 406
Fulton 541 349 3 12 11 1 149 16 186
Geyserville 862 609 5 7 14 0 192 35 328
Glen Ellen 784 693 3 9 16 3 18 42 67
Graton 1,707 1,402 10 29 25 3 144 94 322
Guerneville 4,534 3,926 31 68 47 12 226 224 553
Jenner 136 125 2 0 2 0 0 7 8
Kenwood 1,028 930 1 1 23 2 45 26 79
Larkfield-Wikiup 8,884 7,042 81 168 292 19 878 404 1,979
Monte Rio 1,152 1,047 10 6 11 1 16 61 79
Occidental 1,115 992 7 7 31 0 23 55 81
Penngrove 2,522 2,212 19 24 54 2 112 99 292
Roseland 6,325 3,235 130 224 276 15 2,078 367 3,773
Salmon Creek 86 86 0 0 0 0 0 0 1
Sea Ranch 1,305 1,220 15 3 10 0 37 20 117
Sereno del Mar 126 118 1 0 1 1 2 3 8
Temelec 1,441 1,376 4 4 31 5 5 16 68
Timber Cove 164 152 1 1 6 0 0 4 9
Valley Ford 147 105 1 0 0 0 33 8 52
Other
unincorporated areas
Total
Population
White
African
American
Native
American
Asian
Pacific
Islander
other
races
two or
more races
Hispanic
or Latino
(of any race)
All others not CDPs (combined) 90,835 76,431 930 1,008 1,871 183 7,375 3,037 16,303

2000

At the 2000 United States census, there were 458,614 people, 172,403 households, and 112,406 families in Sonoma County. The population density was 291/sq mi (112/km2). There were 183,153 housing units at an average density of 116/sq mi (45/km2).

Of the 172,403 households, 50.3% were married couples living together, 34.8% were non-families, and 10.4% had a female householder with no husband present. 31.9% had children under the age of 18 living with them, 25.7% were individuals, and 10.0% were 65 years of age or older living alone. The average household size was 2.60, and the average family size was 3.12.

The median age was 38 years. 24.5% were under 18, 8.8% from 18 to 24, 29.2% from 25 to 44, 24.9% from 45 to 64, and 12.6% were 65 years of age or older. For every 100 females there were 97 males. For every 100 females age 18 and over, there were 94 males.

The median household income was $53,076, and the median family income was $61,921. Males had a median income of $42,035, females $32,022. The per capita income for the county was $25,724. About 4.7% of families and 8.1% of the population were below the poverty line, including 8.4% of those under age 18 and 5.7% of those age 65 or over.

The United States Office of Management and Budget has designated Sonoma County as the Santa Rosa-Petaluma, CA Metropolitan Statistical Area. The United States Census Bureau ranked the Santa Rosa-Petaluma, CA Metropolitan Statistical Area as the 105th most populous metropolitan statistical area of the United States as of July 1, 2012.

The Office of Management and Budget has further designated the Santa Rosa-Petaluma, CA Metropolitan Statistical Area as a component of the more extensive San Jose-San Francisco-Oakland, CA Combined Statistical Area, the 5th most populous combined statistical area and primary statistical area of the United States as of July 1, 2012.

Sonoma County's governing board and legislative body is the five-member Sonoma County Board of Supervisors. Supervisors are elected by district at the Consolidated Primary Election, and serve for four years. The Supervisors also sit as directors of several local jurisdictions, such as Sonoma Water, and the Agricultural Preservation & Open Space District.

The current supervisors (as of January 2021) are:

  • District 1: Susan Gorin,
  • District 2: David Rabbitt,
  • District 3: Chris Coursey,
  • District 4: James Gore, and
  • District 5: Lynda Hopkins.

The Supervisors appoint the members of 59 boards, commissions, and committees.

The County Administrator is the county's chief executive officer, reporting to the Board of Supervisors. The administrator manages the county's departments, such as the regional parks department.

On December 15, 2009, the Board announced the appointment of Veronica Ferguson to be the first woman County Administrator. She assumed office on February 1, 2010.

On May 1, 2014, the county launched a public utility named Sonoma Clean Power. This utility was created under the guidelines of Community Choice Aggregation.

State and federal representation

Sonoma County is split between California's 2nd and 5th congressional districts, represented by Jared Huffman (DSan Rafael) and Mike Thompson (DSt. Helena), respectively.

In the California State Assembly, Sonoma County is split between the 2nd, 4th, and 10th districts, which are held by Democrat Jim Wood, Democrat Cecilia Aguiar-Curry, and Democrat Marc Levine, respectively. In the California State Senate, the county is split between the 2nd Senate District, represented by Democrat Mike McGuire, and the 3rd Senate District, represented by Democrat Bill Dodd.

Law enforcement

The Sonoma County Sheriff's Department is the law enforcement agency for the unincorporated area of the county. It also contracts to provide the police forces of the City of Sonoma and the Town of Windsor. The department has more than 1,000 employees, including more than 275 Deputy Sheriffs, in four bureaus. More than 300 Correctional Officers and staff work in two jail facilities; Main Area Detention Facility and the North County Detention Facility, with a total daily population of nearly 1,200 inmates. Police shootings in 2007 led to calls for an independent civilian police review board; which was established in 2015.

Vineyard on northwest flank of Sonoma Mountain.

Forbes Magazine ranked the Santa Rosa metropolitan area—essentially the entire county—185th out of 200, on its 2007 list of Best Places For Business And Careers. It was second on the list five years before. Sonoma County was downgraded because of an increase in the cost of doing business, and reduced job growth, both blamed on increases in the cost of housing.

Winemaking—both the growing of the grapes and their vinting—is an important part of the economic and cultural life of Sonoma County. In 2004, growers harvested 165,783 short tons (150,396 t)s) of wine grapes worth US$310 million. In 2006 the Sonoma County grape harvest amounted to over 185,000 tons, exceeding Napa County's harvest by more than 30 percent. About 80 percent of non-pasture agricultural land in the county is for growing wine grapes—58,280.4 acres (235.852 km2) in 2014 of vineyards, with over 1100 growers. The most common varieties planted are Chardonnay, Cabernet Sauvignon, and Pinot noir, though the area is also known for its Merlot and Zinfandel.

Sonoma County is home to more than 350 wineries with eleven distinct and two shared American Viticultural Areas, including the Sonoma Valley AVA, Russian River Valley AVA, Alexander Valley AVA, Bennett Valley AVA and Dry Creek Valley AVA, the last of which is known for the production of high-quality Zinfandels[citation needed].

For most of the 20th century, Sonoma County was a Republican stronghold in presidential elections. From 1880 until 1988, the only Democrats to carry Sonoma were Winfield Scott Hancock in 1880, Grover Cleveland in 1888 and 1892, Woodrow Wilson in 1912, Franklin D. Roosevelt in 1932 and 1936, and Lyndon B. Johnson in 1964. Like the rest of the Bay Area, it has since become a Democratic stronghold.

The last Republican to win a majority in the county was Ronald Reagan in 1984, and the last Republican to represent a significant part of the county in Congress was Representative Donald H. Clausen, who left office in January 1983.

Presidential elections results
Sonoma County vote
by party in presidential elections
Year GOP DEM Others
2020 23.0% 61,825 74.5% 199,938 2.4% 6,554
2016 22.0% 51,408 68.8% 160,435 9.2% 21,460
2012 25.3% 54,784 71.0% 153,942 3.8% 8,139
2008 24.0% 55,127 73.6% 168,888 2.3% 5,336
2004 30.9% 68,204 67.2% 148,261 1.9% 4,225
2000 32.3% 63,529 59.5% 117,295 8.2% 16,182
1996 29.5% 53,555 55.6% 100,738 14.9% 27,004
1992 24.1% 47,619 52.8% 104,334 23.1% 45,738
1988 41.9% 67,725 56.5% 91,262 1.6% 2,596
1984 51.1% 76,447 47.6% 71,295 1.3% 1,915
1980 48.2% 60,722 36.2% 45,596 15.6% 19,667
1976 47.7% 50,555 47.5% 50,353 4.8% 5,044
1972 54.7% 57,697 41.5% 43,746 3.8% 3,991
1968 48.8% 38,088 43.0% 33,587 8.2% 6,384
1964 38.4% 27,677 61.5% 44,354 0.2% 105
1960 54.1% 34,641 45.5% 29,147 0.4% 244
1956 61.9% 33,659 37.9% 20,616 0.2% 86
1952 66.1% 35,605 32.8% 17,675 1.1% 594
1948 55.2% 22,077 40.1% 16,026 4.7% 1,881
1944 50.4% 16,309 49.3% 15,949 0.3% 111
1940 51.9% 16,819 47.0% 15,230 1.0% 330
1936 39.0% 11,185 60.2% 17,273 0.9% 248
1932 35.7% 9,161 61.1% 15,686 3.2% 822
1928 59.7% 12,891 39.4% 8,506 0.9% 194
1924 56.0% 9,535 10.4% 1,767 33.6% 5,726
1920 66.9% 10,377 26.2% 4,070 6.9% 1,065
1916 50.4% 9,733 43.4% 8,377 6.3% 1,214
1912 0.2% 32 45.8% 6,500 54.0% 7,667
1908 57.5% 5,427 33.6% 3,168 8.9% 844
1904 61.6% 5,269 32.9% 2,816 5.4% 463
1900 54.0% 4,381 43.4% 3,517 2.6% 209
1896 51.9% 4,053 46.0% 3,595 2.2% 168
1892 43.4% 3,016 49.7% 3,451 7.0% 483
1888 46.9% 3,293 48.4% 3,394 4.6% 324
1884 49.4% 3,044 47.7% 2,944 2.7% 172
1880 45.4% 2,290 52.1% 2,628 2.4% 122
Gubernatorial elections results
Sonoma County vote
by party in gubernatorial elections
Year GOP DEM
2018 27.7% 58,338 72.3% 152,040
2014 25.2% 36,249 74.8% 107,328
2010 30.1% 55,472 64.7% 119,079
2006 47.0% 81,608 44.6% 77,392
2003 35.0% 54,651 40.7% 63,588
2002 29.9% 43,408 50.4% 73,079
1998 29.0% 46,616 64.3% 103,235
1994 45.7% 73,234 49.7% 79,720
1990 38.6% 54,706 55.8% 79,093
1986 59.4% 75,003 37.9% 47,859
1982 45.1% 55,968 51.2% 63,542
1978 35.9% 37,584 54.3% 56,920
1974 48.0% 40,339 48.5% 40,756
1970 58.6% 44,823 39.2% 29,953
1966 60.7% 41,516 39.3% 26,898
1962 49.7% 29,647 49.2% 29,373

On November 4, 2008, Sonoma County voted 66.4% against Proposition 8 which amended the California Constitution to ban same-sex marriages.

According to the California Secretary of State, as of February 2019, there are 277,665 registered voters in Sonoma County. Of those, 143,054 (51.5%) are registered Democratic, 49,386 (17.8%) are registered Republican, and 70,244 (25.3%) declined to state a political party. Every city, town, and the unincorporated areas of Sonoma County have more registered Democrats than Republicans.

Voter registration statistics

Population and registered voters
Total population 502,146
Registered voters 261,706 54.7%
Democratic 134,896 51.5%
Republican 56,428 21.6%
Democratic–Republican spread +78,468 +29.9%
Independent 6,619 2.5%
Green 4,640 1.8%
Libertarian 1,833 0.7%
Peace and Freedom 792 0.3%
Americans Elect 3 0.0%
Other 829 0.3%
No party preference 55,666 21.3%

Cities by population and voter registration

Cities by population and voter registration
City Population Registered voters
Democratic Republican D–R spread Other No party preference
Cloverdale 8,390 51.8% 49.1% 24.7% +24.4% 7.9% 21.1%
Cotati 7,154 57.4% 52.8% 17.8% +35.0% 10.3% 22.4%
Healdsburg 11,161 56.5% 52.6% 21.7% +30.9% 7.5% 20.6%
Petaluma 57,265 57.5% 52.3% 20.5% +31.8% 7.8% 22.0%
Rohnert Park 40,741 50.1% 49.6% 21.3% +28.3% 8.8% 23.2%
Santa Rosa 164,976 50.9% 52.1% 21.4% +30.7% 7.7% 21.4%
Sebastopol 7,359 69.6% 61.4% 11.4% +50.0% 9.8% 19.5%
Sonoma 10,430 65.0% 51.2% 22.8% +28.4% 8.1% 20.8%
Windsor 26,229 54.4% 46.6% 27.5% +19.1% 7.5% 21.1%

Higher education

The educational system of Sonoma County is similar to that of other counties in California, with a large number of independent districts.

Library system

The Sonoma County Library system offers a central library in downtown Santa Rosa plus 10 branch libraries and two rural stations. More than half of Sonoma County's residents have library cards and borrow more than 2.5 million items per year. The library's website and catalog]receive over 200,000 visits annually. Staff answer nearly half a million reference questions annually for individuals, businesses and government agencies. During a typical school year over 750 classes, more than half the county total, either visit a library or are visited by a children's librarian. The library operates an adult literacy program, and computer terminals are made available for free Internet access.

City of Santa Rosa, A-26 Invader attack bomber built in 1944.

Incorporated

Sonoma County has nine incorporated municipalities.

Downtown Santa Rosa, county seat of Sonoma County since 1854
Downtown Petaluma
Incorporated communities Population Incorporation Date
City of Cloverdale 8,618 February 28, 1872
City of Cotati 7,265 July 16, 1963
City of Healdsburg 11,254 February 20, 1867
City of Petaluma 57,941 April 12, 1858
City of Rohnert Park 40,971 August 28, 1962
City of Santa Rosa 167,815 March 26, 1868
City of Sebastopol 7,379 June 13, 1902
City of Sonoma 10,648 September 3, 1883
Town of Windsor 26,801 July 1, 1992

Unincorporated

The county also includes the following populated places which are not incorporated:

Census-designated places

Other unincorporated places

Former townships

1884 map showing the boundaries of the county's 14 civil townships

At the time of its formation, the county comprised four civil townships. It was restructured several times, and by 1880 was made up of 14 townships:

  • Analy
  • Bodega
  • Cloverdale
  • Knight's Valley
  • Mendocino
  • Ocean
  • Petaluma
  • Redwood
  • Russian River
  • Salt Point
  • Santa Rosa
  • Sonoma
  • Vallejo
  • Washington

Population ranking

The population ranking of the following table is based on the 2010 census of Sonoma County.

county seat

Rank City/Town/etc. Municipal type Population (2010 Census)
1 Santa Rosa City 167,815
2 Petaluma City 57,941
3 Rohnert Park City 40,971
4 Windsor Town 26,801
5 Healdsburg City 11,254
6 Sonoma City 10,648
7 Larkfield-Wikiup CDP 8,884
8 Cloverdale City 8,618
9 Sebastopol City 7,379
10 Cotati City 7,265
11 Boyes Hot Springs CDP 6,656
12 Roseland CDP 6,325
13 Guerneville CDP 4,534
14 Fetters Hot Springs-Agua Caliente CDP 4,144
15 El Verano CDP 4,123
16 Forestville CDP 3,293
17 Penngrove CDP 2,522
18 Graton CDP 1,707
19 Temelec CDP 1,441
20 Sea Ranch CDP 1,305
21 Eldridge CDP 1,233
22 Monte Rio CDP 1,152
23 Occidental CDP 1,115
24 Bodega Bay CDP 1,077
25 Kenwood CDP 1,028
26 Geyserville CDP 862
27 Glen Ellen CDP 784
28 Fulton CDP 541
29 Cazadero CDP 354
30 Bloomfield CDP 345
31 Bodega CDP 220
32 Timber Cove CDP 164
33 Valley Ford CDP 147
34 Jenner CDP 136
35 Sereno del Mar CDP 126
36 Salmon Creek CDP 86
37 Stewarts Point Rancheria AIAN 78
38 Carmet CDP 47

Film

Due to the varied scenery in Sonoma County and proximity to the city of San Francisco, a large number of movies have been filmed using venues within the county. Some of the earliest U.S. filmmaking occurred in Sonoma County, including Salomy Jane (1914) and one of Broncho Billy Anderson's 1915 Westerns.

Other films include the 1947 film The Farmer's Daughter (starring Joseph Cotten and Loretta Young) as well as two Alfred Hitchcock films, Shadow of a Doubt of 1943, filmed and set in Santa Rosa, and The Birds of 1963, filmed largely in Bodega Bay and Bodega. American Graffiti was filmed largely in Petaluma.

Other films produced partially in Sonoma County include:

Sonoma County

  • 1965 The Third Day
  • 1986 Peggy Sue Got Married – Petaluma, including a 1950s makeover of Washington St., the diner "Millie's Chili Bar" (rechristened as "The Donut Hole"), and exterior and interior shots of Santa Rosa High School.
  • 1993 Nowhere to Run – Coleman Valley Road, Occidental, for farmhouse and pond scenes.
  • 2001 The Man Who Wasn't There
  • 2001 Bandits – Flamingo Hotel, Clover milk truck featuring local icon "Clo the cow" and rural county roads.

Cloverdale

Glen Ellen

Petaluma

Russian River

  • 1925 Braveheart – Along the river.
  • 1942 Holiday Inn – Village Inn Lodge in Monte Rio as the "Holiday Inn" with tons of artificial snow.

Santa Rosa

Sebastopol

Sonoma

Other

Bliss, the default computer wallpaper of Microsoft's Windows XP operating system, is a photograph of a green hill and blue sky with clouds in Sonoma County. Taken in 1996 by Charles O'Rear, it is the most viewed photo in the world.

  1. Only larceny-theft cases involving property over $400 in value are reported as property crimes.
  2. Other = Some other race + Two or more races
  3. Native American = Native Hawaiian or other Pacific Islander + American Indian or Alaska Native
  4. This total comprised 5,806 votes for Progressive Theodore Roosevelt (who was official Republican nominee in California), 1,494 votes for Socialist Eugene V. Debs and 367 votes for Prohibition Party nominee Eugene W. Chafin.
  5. Percentage of registered voters with respect to total population. Percentages of party members with respect to registered voters follow.
  1. "Chronology". California State Association of Counties. RetrievedFebruary 6, 2015.
  2. "Cobb Mountain-Southwest Peak". Peakbagger.com. RetrievedFebruary 4, 2015.
  3. "American FactFinder". United States Census Bureau. Archived from the original on February 14, 2020. RetrievedApril 19, 2019.
  4. "American FactFinder". Archived from the original on February 14, 2020. RetrievedApril 19, 2019.
  5. "Find a County". National Association of Counties. Archived from the original on May 31, 2011. RetrievedJune 7, 2011.
  6. "Sonoma County Agricultural Preservation and Open Space District". Sonoma County. Archived from the original on December 31, 2006. RetrievedJuly 17, 2014.
  7. "Sonoma County Indicators: 2007"(PDF). Sonoma County. Archived from the original(PDF) on September 24, 2015. RetrievedJuly 17, 2014.Cite journal requires |journal= ()
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Sonoma County, California
Sonoma County California Language Watch Edit Sonoma County is a county in the U S state of California As of the 2010 United States Census its population was 483 878 3 Its county seat and largest city is Santa Rosa 5 It is to the north of Marin County and the south of Mendocino County It is west of Napa County and Lake County Sonoma County CaliforniaCountyCounty of SonomaImages from top down left to right Bodega Bay Sonoma Plaza Fort RossSealMotto s Agriculture Industry Recreation Interactive map of Sonoma CountyLocation in the state of CaliforniaCoordinates 38 31 N 122 56 W 38 51 N 122 93 W 38 51 122 93 Coordinates 38 31 N 122 56 W 38 51 N 122 93 W 38 51 122 93CountryUnited StatesStateCaliforniaRegionSan Francisco Bay AreaIncorporatedFebruary 18 1850 1 Named forthe city of SonomaCounty seat and largest city Santa RosaGovernment BodySonoma County Board of SupervisorsArea Total1 768 sq mi 4 580 km2 Land1 576 sq mi 4 080 km2 Water192 sq mi 500 km2 Highest elevation 2 4 483 ft 1 366 m Population April 1 2010 3 Total483 878 Estimate 2019 4 494 336 Density270 sq mi 110 km2 Time zoneUTC 8 Pacific Time Zone Summer DST UTC 7 Pacific Daylight Time Area code707FIPS code06 097GNIS feature ID1657246Websitesonomacounty wbr ca wbr gov Sonoma County includes the Santa Rosa Petaluma Metropolitan Statistical Area which is part of the San Jose San Francisco Oakland CA Combined Statistical Area It is the northernmost county in the nine county San Francisco Bay Area region In California s Wine Country region which also includes Napa Mendocino and Lake counties Sonoma County is the largest producer It has thirteen approved American Viticultural Areas and more than 350 wineries The voters have twice approved open space initiatives 6 that have provided funding for public acquisition of natural areas preserving forested areas coastal habitat and other open space More than 8 4 million tourists visit each year spending more than 1 billion in 2016 In 2012 Sonoma County ranked as the 22nd county in the United States in agricultural production 7 By 1920 Sonoma County was ranked as the eighth most agriculturally productive U S county and a leading producer of hops grapes prunes apples as well as dairy and poultry products 8 largely due to the extent of available fertile agricultural land in addition to the abundance of high quality water for irrigation As of 2009 agriculture was largely divided between two nearly monocultural uses grapes and pasturage Contents 1 History 2 Etymology 3 Geography 3 1 Climate 3 2 Ocean bays rivers and streams 3 2 1 Russian River 3 2 2 Laguna de Santa Rosa 3 2 3 Other water bodies 3 3 Marine protected areas of Sonoma County 3 4 Threatened endangered species 3 5 Adjacent counties 3 6 National protected area 4 Transportation 4 1 Major highways 4 2 Public transportation 4 3 Airports 4 4 Railroads 5 Crime 5 1 Cities by population and crime rates 6 Demographics 6 1 2011 6 1 1 Places by population race and income 6 2 2010 6 3 2000 7 Metropolitan Statistical Area 8 Government 8 1 State and federal representation 8 2 Law enforcement 9 Economy 10 Politics 10 1 Voter registration statistics 10 1 1 Cities by population and voter registration 11 Education 11 1 Higher education 11 2 Library system 12 Museums 13 Places of interest 14 Populated places 14 1 Incorporated 14 2 Unincorporated 14 2 1 Census designated places 14 2 2 Other unincorporated places 14 3 Former townships 14 4 Population ranking 15 In popular culture 15 1 Film 15 2 Other 16 See also 17 Notes 18 References 19 Further reading 20 External linksHistory EditThe Pomo Coast Miwok and Wappo peoples were the earliest human settlers of Sonoma County between 8000 and 5000 BC effectively living within the natural carrying capacity of the land Archaeological evidence of these First people includes a number of occurrences of rock carvings especially in southern Sonoma County these carvings often take the form of pecked curvilinear nucleated design Spaniards Russians and other Europeans claimed and settled in the county from the late 16th to mid 19th century seeking timber fur and farmland 9 The Russians were the first newcomers to establish a permanent foothold in Sonoma County with the Russian American Company establishing Fort Ross on the Sonoma Coast in 1812 This settlement and its outlying Russian settlements came to include a population of several hundred Russian and Aleut settlers and a stockaded fort with artillery However the Russians abandoned it in 1841 and sold the fort to John Sutter settler and Mexican land grantee of Sacramento 10 Fort Ross was established by the Russians in 1812 The Mission San Francisco Solano founded in 1823 as the last and northernmost of 21 California missions is in the present City of Sonoma at the northern end of El Camino Real El Presidio de Sonoma or Sonoma Barracks part of Spain s Fourth Military District was established in 1836 by Comandante General Mariano Guadalupe Vallejo His duties included keeping an eye on the Russian traders at Fort Ross secularizing the Mission maintaining cooperation with the Native Americans of the entire region and doling out the lands for large estates and ranches The City of Sonoma was the site of the Bear Flag Revolt in 1846 11 General Mariano Guadalupe Vallejo reviewing his troops in Sonoma 1846 Sonoma was one of the original counties when California became a state in 1850 12 with its county seat originally the town now city of Sonoma However by the early 1850s Sonoma had declined in importance in both commerce and population its county buildings were crumbling and it was relatively remote As a result elements in the newer rapidly growing towns of Petaluma Santa Rosa and Healdsburg began vying to move the county seat to their towns The dispute ultimately was between the bigger richer commercial town of Petaluma and the more centrally located growing agricultural center of Santa Rosa The fate was decided following an election for the state legislature in which James Bennett of Santa Rosa defeated Joseph Hooker of Sonoma and introduced a bill that resulted in Santa Rosa being confirmed as county seat in 1854 13 Allegedly several Santa Rosans not caring to wait decided to take action and one night rode down the Sonoma Valley to Sonoma took the county seals and records and brought them to Santa Rosa 14 Some of the county s land which was annexed from Mendocino County between 1850 and 1860 Early post 1847 settlement and development focused primarily on the city of Sonoma then the region s sole town and a common transit and resting point in overland travel between the region and Sacramento and the gold fields to the east However after 1850 a settlement that soon became the city of Petaluma began to grow naturally near the farthest navigable point inland up the Petaluma River Originally a hunting camp used to obtain game to sell in other markets by 1854 Petaluma had grown into a bustling center of trade taking advantage of its position on the river near a region of highly productive agricultural land that was being settled Soon other inland towns notably Santa Rosa and Healdsburg began to develop similarly due to their locations along riparian areas in prime agricultural flatland However their development initially lagged behind Petaluma which until the arrival of railroads in the 1860s remained the primary commercial transit and break of bulk point for people and goods in the region After the arrival of the San Francisco and North Pacific Railroad in 1870 Santa Rosa began to boom soon equalling and then surpassing Petaluma as the region s population and commercial center The railroad bypassed Petaluma for southern connections to ferries of San Francisco Bay citation needed Six nations have claimed Sonoma County from 1542 to the present citation needed Spanish Empire 1542 by sea voyage of Juan Rodriguez Cabrillo as far as the Russian River Later validated by voyage of Sebastian Vizcaino 1602 Kingdom of England June 1579 voyage of the Golden Hind under Captain Francis Drake at Bodega Bay exact location disputed Spanish Empire October 1775 the Sonora at Bodega Bay under Lt Juan Francisco de la Bodega y Quadra until 1821 when Mexico gained independence from Spain Russian Empire by Russian American Company expedition led by Ivan Alexandrovich Kuskov the founder of Fort Ross and from 1812 to 1821 its colonial administrator Note There is an overlap of rule with the Mexican Empire next item until the Russians sold Fort Ross in 1841 to John Sutter before leaving the area in 1842 First Mexican Empire August 1821 under Emperor Agustin Iturbide October 1822 probable time new flag raised in California until 1823 Mexican Republic 1823 until June 1846 California Republic June 14 1846 until July 9 1846 United States of America July 9 1846 to present Sonoma County was severely shaken by the 1906 San Francisco earthquake The displacements along the fault averaged 15 feet 4 6 m 15 In October 2017 the county was greatly affected by the Tubbs Fire 16 and the Nuns Fire In late October and early November 2019 the Kincade Fire burned 77 758 acres 31 468 ha almost all in Sonoma County In August and September 2020 the Walbridge Fire burned 55 209 acres 22 342 ha in the western part of the county then in September October the Glass fire affected the city of Santa Rosa and ultimately destroying 1 000 buildings 17 The county also had a wildfire in the 1870s that is compared to the Hanley fire and Tubbs fire because they burned in the same path The Sonoma County Landmarks Commission recognizes nearly 200 formal historical landmarks and the Sonoma County Historical Society counts 380 landmarks recognized by several agencies Etymology Edit Pomo girl c 1924 by Edward S Curtis from The North American Indian volume 14 According to the book California Place Names The name of the Indian tribe is mentioned in baptismal records of 1815 as Chucuines o Sonomas by Chamisso in 1816 as Sonomi and repeatedly in Mission records of the following years 18 According to the Coast Miwok and the Pomo tribes that lived in the region Sonoma translates as valley of the moon or many moons Their legends detail this as a land where the moon nestled hence the names Sonoma Valley and the Valley of the Moon 19 This translation was first recorded in an 1850 report by General Mariano Guadalupe Vallejo to the California Legislature 20 Jack London popularized it in his 1913 novel The Valley of the Moon In the native languages there is also a constantly recurring ending tso noma from tso the earth and noma village hence tsonoma earth village 21 Other sources say Sonoma comes from the Patwin tribes west of the Sacramento River and their Wintu word for nose Per California Place Names the name is doubtless derived from a Patwin word for nose which Padre Arroyo Vocabularies p 22 gives as sonom Suisun Spaniards may have found an Indian chief with a prominent protuberance and applied the nickname of Chief Nose to the village and the territory 22 The name may have applied originally to a nose shaped geographic feature 18 Jesse Sawyer argues that it is from Wappo tso noma meaning redwood place 23 Geography Edit Hood Mountain with vineyards in foreground According to the U S Census Bureau the county has an area of 1 768 square miles 4 580 km2 of which 1 576 square miles 4 080 km2 is land and 192 square miles 500 km2 10 9 is water 24 The county lies in the North Coast Ranges of northwestern California Its ranges include the Mayacamas and the Sonoma Mountains the southern peak of the latter being the prominent landform Sears Point The highest peak in the Mayacamas within the county and the highest peak in the County is Mt Saint Helena It has uncommon occurrences of pygmy forest dominated by Mendocino cypress The highest peak of the Sonoma Mountains is Sonoma Mountain itself which boasts two significant public access properties Jack London State Historic Park and Fairfield Osborn Preserve The county includes the City of Sonoma and the Sonoma Valley in which the City of Sonoma is located However these are not synonymous The City of Sonoma is merely one of nine incorporated cities in the county The Sonoma Valley is just the southeastern portion of the county which includes many other valleys and geographic zones including the Petaluma Valley the Santa Rosa Plains the Russian River the Alexander Valley and the Dry Creek Valley Distinct habitat areas within the county include oak woodland redwood forest northern coastal scrub grassland marshland oak savanna and riparian woodland The California oak woodland in the upper Yulupa Creek and Spring Creek watersheds in Annadel State Park is a relatively undisturbed ecosystem with considerable biodiversity These forested areas have been characterized as some of the best examples of such woodlands 25 An unusual characteristic of these forests is the high content of undisturbed prehistoric bunchgrass understory testifying to the absence of historic grazing or other agriculture Trees of the oak woodland habitat include Pacific madrone Douglas fir coast live oak Garry oak and California laurel Common understory plants are toyon poison oak and at the fringes coast silk tassel Climate Edit Sonoma County s Dry Creek Valley Sonoma County as is often the case with coastal counties in California has a great degree of climatic variation and numerous often very different microclimates 26 27 Key determining factors for local climate are proximity to the ocean elevation and the presence and elevation of hills or mountains to the east and west This is in large part due to the fact that as throughout California the prevailing weather systems and wind come normally from the Pacific Ocean blowing in from the west and southwest so that places closer to the ocean and on the windward side of higher elevations tend to receive more rain from autumn through spring and more summer wind and fog This itself is partly a result of the presence of high and low pressures in inland California with persistent high summer temperatures in the Central Valley in particular leading to low pressures drawing in moist air from the Pacific cooling into damp cool breezes and fog over the cold coastal water Those places further inland and particularly in the lee of significant elevations tend to receive less rain and less in some cases no fog in the summer The coast itself is typically cool and moist throughout summer often foggy with fog generally blowing in during the late afternoon and evening until it clears in the later morning becoming sunny before repeating Coastal summer highs are typically in the mid to high 60s warming to the low 70s further from the ocean Certain inland areas including the Petaluma area and the Santa Rosa Plain are also prone to this normal fog pattern in general 27 However they tend to receive the fog later in the evening the fog tends to be more short lived and mid day temperatures are significantly higher than they are on the coast typically in the low 80s F This is particularly true for Petaluma Cotati and Rohnert Park and only slightly less so Santa Rosa Windsor and Sebastopol In large part this results from lower elevations and the prominent Petaluma Gap in the hills between the ocean to the west and the Petaluma Valley and Santa Rosa Plain to the east Areas north of Santa Rosa and Windsor with larger elevations to the west and further from the fog path tend to receive less fog and less summer marine influence Healdsburg to the north of Windsor is less foggy and much warmer with summer highs typically in the higher 80s to about 90 F 32 C Sonoma and the Sonoma Valley east of Petaluma are similar with highs typically in the very high 70s F to 80 F 27 C This is in part due to the presence of the Sonoma Mountains between Petaluma and Sonoma Cloverdale far to the north and outside of the Santa Rosa Plain is significantly hotter than any other city in the county with rare evening morning fog and highs often in the 90s reaching 100 F 38 C much more frequently than the other cities Notably however the temperature differences among the different areas of the county are greatest for the highs during mid day with the diurnal lows much more even throughout the entire county The lows are closely tied to the evening morning cooling marine influence in addition to elevation bringing similarly cool temperatures to much of region These weather patterns contribute to high diurnal temperature fluctuations in much of the county In summer daily lows and highs are typically 30 40 F apart inland with highs for Petaluma Cotati Rohnert Park Santa Rosa Windsor and Sebastopol typically being in the very low 80s F and lows at or near 50 F 10 C Healdsburg and the City of Sonoma with similar lows have even greater diurnal fluctuations due to their significantly warmer highs On the other hand the coast with strong marine influence tends to have low diurnal temperature fluctuation with summer highs much cooler than the inland towns typically 65 75 F yet lows in the high 40s to low 50s F fairly comparable to most inland towns These microclimates are evident during the rainy seasons as well with great variation in the amount of rainfall throughout the county Generally all of Sonoma County receives a fair amount of rain with much of the county receiving between about 25 in 640 mm comparable to areas such as Sonoma and Petaluma and roughly 30 in 760 mm normal for Santa Rosa However certain areas particularly in the north west portion of the county around the Russian River receive significantly more rainfall The Guerneville area for example typically receives about 50 in 1 300 mm of rain a year with annual rain occasionally going as high as 70 in 1 800 mm Nearby Cazadero typically receives about 72 in 1 800 mm of rain a year many times has reached over 100 in 2 500 mm a year and sometimes over 120 in 3 000 mm of rain in a year The Cazadero region is the second wettest place in California after Gasquet 28 Snow is exceedingly rare in Sonoma County except in the higher elevations on and around the Mayacamas Mountains particularly Mount Saint Helena and Cobb Mountain whose peak is in Lake County 29 Ocean bays rivers and streams Edit Goat Rock Beach as viewed from the Jenner Cliffs looking south showing the mouth of the Russian River at the Pacific Ocean Sonoma County is bounded on the west by the Pacific Ocean and has 76 miles 122 km of coastline The major coastal hydrographic features are Bodega Bay the mouth of the Russian River and the mouth of the Gualala River at the border with Mendocino County All of the county s beaches were listed as among the cleanest in the state in 2010 30 Six of the county s nine cities from Healdsburg south through Santa Rosa to Rohnert Park and Cotati are in the Santa Rosa Plain The northern Plain drains directly to the Russian River or to a tributary the southern Plain drains to the Russian River via the Laguna de Santa Rosa Russian River Edit Much of central and northern Sonoma County is in the watershed of the Russian River and its tributaries The river rises in the coastal mountains of Mendocino County north of the city of Ukiah and flows into Lake Mendocino a major flood control reservoir The river flows south from the lake through Mendocino to Sonoma County paralleled by Highway 101 It turns west at Healdsburg receiving water from Lake Sonoma via Dry Creek and empties into the Pacific Ocean at Jenner Laguna de Santa Rosa Edit The Laguna de Santa Rosa is the largest tributary of the Russian River 31 It is 14 miles 23 km long running north from Cotati to the Russian River near Forestville Its flood plain is more than 7 500 acres 30 km2 It drains a 254 square mile 660 km2 watershed including most of the Santa Rosa Plain The Laguna de Santa Rosa Foundation says 32 The Laguna de Santa Rosa is Sonoma County s richest area of wildlife habitat and the most biologically diverse region of Sonoma County itself the second most biologically diverse county in California It is a unique ecological system covering more than 30 000 acres 120 km2 and comprisedof a mosaic of creeks open water perennial marshes seasonal wetlands riparian forests oak woodlands and grasslands As the receiving water of a watershed where most of the county s human population lives it is a landscape feature of critical importance to Sonoma County s water quality flood control and biodiversity The Laguna s largest tributary is Santa Rosa Creek which runs through Santa Rosa Its major tributaries are Brush Creek Mark West Creek Matanzas Creek Spring Creek and Piner Creek Santa Rosa Creek was shown to be polluted in Sonoma county first flush results 33 Other water bodies Edit The boundary with Marin County runs from the mouth of the Estero Americano at Bodega Bay up Americano Creek then overland to San Antonio Creek and down the Petaluma River to its mouth at the northwest corner of San Pablo Bay which adjoins San Francisco Bay The southern edge of Sonoma County comprises the northern shore of San Pablo Bay between the Marin County border at the Petaluma River and the border with Solano County at Sonoma Creek Sonoma County has no incorporated communities directly on the shore of San Pablo Bay At the present there is only a private marina with related facilities called Port Sonoma near the mouth of the Petaluma River However the Petaluma River which flows into San Pablo Bay is navigable up to the city of Petaluma The Petaluma River Tolay Creek and Sonoma Creek enter the bay at the county s southernmost tip The intertidal zone where they join the bay is the vast Napa Sonoma Marsh Americano Creek the Petaluma River Tolay Creek and Sonoma Creek are the principal streams draining the southern portion of the county The Sonoma Valley is drained by Sonoma Creek whose major tributaries are Yulupa Creek Graham Creek Calabazas Creek Schell Creek and Carriger Creek Arroyo Seco Creek is tributary to Schell Creek Other creeks include Foss Felta and Mill Lakes and reservoirs in the county include Lake Sonoma Tolay Lake Lake Ilsanjo Santa Rosa Creek Reservoir Lake Ralphine and Fountaingrove Lake Marine protected areas of Sonoma County Edit Like underwater parks these marine protected areas help conserve ocean wildlife and marine ecosystems Del Mar Landing State Marine Reserve Stewarts Point State Marine Reserve amp Stewarts Point State Marine Conservation Area Salt Point State Marine Conservation Area Gerstle Cove State Marine Reserve Russian River State Marine Reserve and Russian River State Marine Conservation Area Bodega Head State Marine Reserve amp Bodega Head State Marine Conservation Area Estero Americano State Marine Recreational Management AreaThreatened endangered species Edit A number of endangered plants and animals are found in Sonoma County including the California clapper rail Rallus longirostris obsoletus salt marsh harvest mouse Reithrodontomys raviventris northern red legged frog Rana aurora Sacramento splittail Pogonichthys macrolepidotus California freshwater shrimp Syncaris pacifica showy Indian clover Trifolium amoenum and Hickman s potentilla Potentilla hickmanii Species of special local concern include the California tiger salamander Ambystoma californiense and some endangered plants including Burke s goldfields Lasthenia burkei Sebastopol meadowfoam Limnanthes vinculans and Sonoma sunshine or Baker s stickyseed Blennosperma bakeri Endangered species that are endemic to Sonoma County include Sebastopol meadowfoam Sonoma sunshine and Pitkin Marsh lily Lilium pardalinum subsp pitkinense The Sonoma County Water Agency has had a Fisheries Enhancement Program since 1996 Its website says 34 The primary focus of the FEP is to enhance habitat for three salmonids Steelhead Chinook salmon and Coho salmon These three species are listed as threatened under the U S Endangered Species Act The California Department of Fish and Game considers the Coho salmon endangered Adjacent counties Edit Mendocino County California north Lake County California northeast Napa County California east Solano County California southeast Marin County California south Contra Costa County California south southeast 35 36 National protected area Edit San Pablo Bay National Wildlife Refuge part Transportation EditMajor highways Edit U S Route 101 U S Route 101 is the westernmost Federal highway in the U S A Running north south through the states of California Oregon and Washington it generally parallels the coastline from the Mexico US border to the Canada US border Highway 101 links seven of the county s nine incorporated cities Cloverdale Healdsburg Windsor Santa Rosa Rohnert Park Cotati and Petaluma It is a freeway for its entire length within the county The four lane sections of the highway have been heavily congested during peak commute hours for many years and work is being done to widen part of the highway to six lanes The segment from north of Petaluma at Old Redwood Highway Petaluma Boulevard North exit to Windsor has been fully widened as has the segment from the Petaluma River bridge to the Marin County border The two new inner lanes are designated for vehicles with two or more occupants during commute hours Work is being done around Petaluma to finish the widening within Sonoma County the widening also involves upgrading the highway to full freeway standards State Route 1 Within Sonoma County Highway 1 follows the coastline from the Mendocino County border at the mouth of the Gualala River to the Marin County border at the Estero Americano Americano Creek southeast of Bodega Bay State Route 12 State Route 12 in Sonoma Broadway Highway 12 runs eastward from its intersection with Highway 116 in Sebastopol to Santa Rosa There it turns south through the Valley of the Moon to Sonoma then east into Napa County The four lane freeway section within Santa Rosa between Fulton Road and Farmers Lane is called the Luther Burbank Memorial Highway That section especially where it crosses Highway 101 is severely congested during peak commute hours The two lane Bodega Highway runs west from the intersection of Highways 12 and 116 in Sebastopol through the coastal hills to its intersection with Highway 1 east of Bodega Bay East of Santa Rosa Highway 12 is also called Sonoma Highway and east of the City of Sonoma Carneros Highway State Route 37 Highway 37 connects Highway 101 at Novato in Marin County with Interstate 80 in Vallejo in Solano County at the top of San Pablo Bay Within Sonoma County it is also called Sears Point Road State Route 116 Highway 116 is a winding two lane rural route that runs from Jenner at the mouth of the Russian River on the coast southeast to Arnold Drive near Sonoma It is also called Guerneville Highway between Guerneville and Forestville Gravenstein Highway North between Forestville and Sebastopol and Gravenstein Highway South between Sebastopol and Stony Point Road west of Rohnert Park East of Petaluma it is called Lakeville Highway then Stage Gulch Road State Route 121 Highway 121 is a two lane rural route running from Highway 37 near Sears Point Raceway to Highway 128 in Lake Berryessa in Napa County State Route 128 The northernmost section of Highway 128 is a two lane rural route running southeast from Highway 101 at Geyserville north of Healdsburg through the Alexander Valley and into Napa County Public transportation Edit Sonoma County Transit is the countywide transit operator providing service to all cities in Sonoma County CityBus operates within the city limits of Santa Rosa 37 The cities of Cloverdale and Petaluma also provide their own local bus service Golden Gate Transit connects Santa Rosa and points south with Marin County and San Francisco Mendocino Transit Authority runs north from Santa Rosa to Ukiah via US 101 and to the coast via California Routes 12 and 1 Sonoma Marin Area Rail Transit SMART is a commuter rail line eventually planned to go between Larkspur in Marin County and Cloverdale in Sonoma County As of December 2020 update the line operates between Larkspur and the Sonoma County Airport Airports Edit The Charles M Schulz Sonoma County Airport is at 2290 Airport Boulevard west of Highway 101 between Santa Rosa and Windsor Its main runway is 5 115 feet 1 559 m long and 150 feet 46 m wide and can accommodate planes up to 95 000 pounds 43 000 kg maximum gross takeoff weight It offers fuel major maintenance hangar space and tie downs for local and transient aircraft Alaska Airlines American Airlines and United Airlines offer regular daily commercial flights There are five general aviation airports within the county Cloverdale Municipal Airport Healdsburg Municipal Airport Petaluma Municipal Airport Sonoma Skypark Sonoma Valley AirportRailroads Edit Historical railroads of Sonoma County Mesa Grande train station about 1910 In 1864 the Petaluma and Haystack Railroad connected the city of Petaluma to a ferry landing at the head of navigation on the Petaluma River In 1870 the San Francisco and North Pacific Railroad SF amp NP connected the City of Santa Rosa to ferry connections at Donahue landing on the Petaluma River Rail service was extended north to Healdsburg in 1871 and Cloverdale in 1872 In 1884 the railroad was extended south to an alternate ferry connection in Tiburon This rail line serves as the primary route of Sonoma Marin Area Rail Transit 38 The 3 foot gauge North Pacific Coast Railroad extended northward in 1876 from a ferry connection at Sausalito through Valley Ford Freestone and Occidental to Monte Rio on the lower Russian River Service was extended to Duncans Mills in 1877 and Cazadero in 1885 The standard gauge Fulton and Guerneville Railroad left the SF amp NP at Fulton to reach Korbel in 1876 and Guerneville in 1877 Standard gauge rails were extended down river to Duncan Mills in 1909 after the Northwestern Pacific Railroad merger and narrow gauge service was discontinued in 1930 The standard gauge route became River Road after tracks were removed in 1935 39 The unique Sonoma Valley Prismoidal Railway linked the city of Sonoma to bay ferries in 1876 and was replaced in 1879 by the 3 foot 0 91 m gauge Sonoma Valley Railroad to a ferry landing near the mouth of the Petaluma River Service was extended from Sonoma to Glen Ellen in 1882 The southern end of the line was extended westward in 1888 to a connection with the SF amp NP at Ignacio This line was converted to standard gauge in 1890 and remains in 2018 as Sonoma County s connection to the national rail system at Schellville Southern Pacific subsidiary Santa Rosa and Carquinez Railroad extended eastward in 1888 to link Santa Rosa with the national rail system The portion between Sonoma and Santa Rosa was dismantled in the 1940s after interchange shifted to the former Sonoma Valley line 40 A SF amp NP branch line from Santa Rosa brought rail service to Sebastopol in 1890 The Petaluma and Santa Rosa Railroad extended interurban service north from a ferry connection in Petaluma to reach Sebastopol in 1904 Santa Rosa in 1905 and Forestville in 1906 Portions of this line were converted to the Joe Rodota Trail after tracks were removed in the 1980s 41 The Sonoma Marin Area Rail Transit commuter rail line inaugurated passenger service on August 25 2017 42 utilizing the Northwestern Pacific Railroad right of way from Sonoma County Airport station to Larkspur Landing in Marin The system is planned to extend to Cloverdale Depot Crime EditThe following table includes the number of incidents reported and the rate per 1 000 persons for each type of offense in the year of 2009 Population and crime ratesPopulation 43 478 551Violent crime 44 1 917 4 01 Homicide 44 9 0 02 Forcible rape 44 163 0 34 Robbery 44 318 0 66 Aggravated assault 44 1 427 2 98Property crime 44 4 537 9 48 Burglary 44 1 993 4 16 Larceny theft 44 note 1 6 671 13 94 Motor vehicle theft 44 786 1 64Arson 44 85 0 18Cities by population and crime rates Edit Cities by population and crime ratesCity Population 45 Violent crimes 45 Violent crime rate per 1 000 persons Property crimes 45 Property crime rate per 1 000 personsCloverdale 8 775 6 0 68 157 17 89Cotati 7 398 54 7 30 85 11 49Healdsburg 11 458 18 1 57 271 23 65Petaluma 58 995 167 2 83 822 13 93Rohnert Park 41 716 192 4 60 770 18 46Santa Rosa 170 862 636 3 72 3 818 22 35Sebastopol 7 512 8 1 06 170 22 63Sonoma 10 841 27 2 49 193 17 80Windsor 27 293 67 2 45 318 11 65Demographics Edit2011 Edit Population race and incomeTotal population 43 478 551 White 43 390 474 81 6 Black or African American 43 7 161 1 5 American Indian or Alaska Native 43 5 962 1 2 Asian 43 19 249 4 0 Native Hawaiian or other Pacific Islander 43 1 513 0 3 Some other race 43 37 977 7 9 Two or more races 43 16 215 3 4 Hispanic or Latino of any race 46 116 222 24 3 Per capita income 47 33 119Median household income 48 64 343Median family income 49 78 227Places by population race and income Edit Places by population and racePlace Type 50 Population 43 White 43 Other 43 note 2 Asian 43 Black or African American 43 Native American 43 note 3 Hispanic or Latino of any race 46 Bloomfield CDP 186 93 0 0 0 7 0 0 0 0 0 3 2 Bodega CDP 132 100 0 0 0 0 0 0 0 0 0 0 0 Bodega Bay CDP 772 87 2 3 5 9 3 0 0 0 0 4 9 Boyes Hot Springs CDP 7 284 74 8 20 8 3 4 0 0 1 1 52 7 Carmet CDP 22 100 0 0 0 0 0 0 0 0 0 0 0 Cazadero CDP 305 92 8 7 2 0 0 0 0 0 0 8 9 Cloverdale City 8 390 81 1 13 6 4 6 0 2 0 5 30 2 Cotati City 7 154 87 9 6 2 4 4 1 2 0 2 10 5 Eldridge CDP 1 899 74 6 22 9 1 8 0 5 0 2 19 0 El Verano CDP 3 555 80 6 13 3 5 5 0 0 0 5 28 2 Fetters Hot Springs Agua Caliente CDP 4 034 88 7 7 1 2 9 0 7 0 6 41 2 Forestville CDP 3 268 86 6 10 0 3 1 0 0 0 2 10 7 Fulton CDP 691 54 6 36 0 9 4 0 0 0 0 36 0 Geyserville CDP 1 024 58 1 37 6 2 4 0 0 1 9 56 7 Glen Ellen CDP 549 91 4 7 3 0 0 1 3 0 0 10 4 Graton CDP 1 621 83 0 14 4 0 0 0 3 2 3 22 8 Guerneville CDP 4 187 90 6 5 4 0 3 2 1 1 6 11 6 Healdsburg City 11 161 79 1 17 7 0 3 0 8 2 2 33 0 Jenner CDP 113 100 0 0 0 0 0 0 0 0 0 0 0 Kenwood CDP 509 80 6 17 3 2 2 0 0 0 0 18 3 Larkfield Wikiup CDP 8 569 88 3 7 7 3 3 0 2 0 5 17 6 Monte Rio CDP 1 044 91 9 5 9 0 8 0 0 1 4 2 4 Occidental CDP 1 264 88 8 5 9 4 0 1 3 0 0 4 8 Penngrove CDP 2 428 90 6 8 6 0 8 0 0 0 0 12 8 Petaluma City 57 265 83 5 9 2 5 1 1 0 1 1 21 3 Rohnert Park City 40 741 78 6 11 5 6 6 2 0 1 4 23 3 Roseland CDP 6 628 67 6 27 1 2 9 1 8 0 5 58 5 Salmon Creek CDP 95 93 7 0 0 0 0 0 0 6 3 0 0 Santa Rosa City 164 976 78 2 12 5 5 1 2 3 1 9 28 2 Sea Ranch CDP 812 97 9 0 7 1 4 0 0 0 0 7 4 Sebastopol City 7 359 88 8 6 8 1 2 0 7 2 5 10 8 Sereno del Mar CDP 119 100 0 0 0 0 0 0 0 0 0 0 0 Sonoma City 10 430 87 5 8 0 2 1 0 4 1 9 16 6 Temelec CDP 1 510 97 3 1 7 1 1 0 0 0 0 10 2 Timber Cove CDP 165 100 0 0 0 0 0 0 0 0 0 13 9 Valley Ford CDP 85 100 0 0 0 0 0 0 0 0 0 43 5 Windsor Town 26 229 80 1 12 7 3 0 0 6 3 7 32 2 Places by population and incomePlace Type 50 Population 51 Per capita income 47 Median household income 48 Median family income 49 Bloomfield CDP 186 31 592 85 515 85 735Bodega CDP 132 26 221 21 750 40 972Bodega Bay CDP 772 52 512 73 250 122 500Boyes Hot Springs CDP 7 284 24 218 47 123 48 382Carmet CDP 22 52 52 52 Cazadero CDP 305 32 407 46 875 53 500Cloverdale City 8 390 25 745 56 649 71 233Cotati City 7 154 38 863 62 969 77 350Eldridge CDP 1 899 28 397 94 688 105 724El Verano CDP 3 555 27 189 49 731 53 409Fetters Hot Springs Agua Caliente CDP 4 034 29 849 59 315 63 879Forestville CDP 3 268 32 773 53 095 65 135Fulton CDP 691 25 734 42 692 125 417Geyserville CDP 1 024 23 915 49 375 51 250Glen Ellen CDP 549 33 389 45 558 56 250Graton CDP 1 621 36 676 77 574 91 946Guerneville CDP 4 187 30 594 39 459 61 250Healdsburg City 11 161 34 031 63 666 72 235Jenner CDP 113 45 432 81 161 42 422Kenwood CDP 509 76 096 56 250 144 318Larkfield Wikiup CDP 8 569 33 798 71 046 92 243Monte Rio CDP 1 044 21 861 31 667 41 544Occidental CDP 1 264 46 895 67 205 104 375Penngrove CDP 2 428 39 270 84 315 98 407Petaluma City 57 265 35 111 76 185 92 192Rohnert Park City 40 741 28 203 56 950 71 726Roseland CDP 6 628 20 518 54 255 60 104Salmon Creek CDP 95 70 087 80 694 80 694Santa Rosa City 164 976 30 085 60 850 69 944Sea Ranch CDP 812 48 998 57 227 79 063Sebastopol City 7 359 35 459 60 000 85 391Sereno del Mar CDP 119 120 019 162 986 162 986Sonoma City 10 430 42 261 63 262 104 942Temelec CDP 1 510 37 406 39 274 44 960Timber Cove CDP 165 39 092 42 143 58 250Valley Ford CDP 85 52 52 52 Windsor Town 26 229 31 009 77 157 86 4252010 Edit Historical populationCensus Pop 1850560 186011 8672 019 1 187019 81967 0 188025 92630 8 189032 72126 2 190038 48017 6 191048 39425 8 192052 0907 6 193062 22219 5 194069 05211 0 1950103 40549 7 1960147 37542 5 1970204 88539 0 1980299 68146 3 1990388 22229 5 2000458 61418 1 2010483 8785 5 2019 est 494 336 4 2 2 U S Decennial Census 53 1790 1960 54 1900 1990 55 1990 2000 56 2010 2015 3 The 2010 United States census reported that Sonoma County had a population of 483 878 The racial makeup of Sonoma County was 371 412 76 8 White 7 610 1 6 African American 6 489 1 3 Native American 18 341 3 8 Asian 1 558 0 3 Pacific Islander 56 966 11 8 from other races and 21 502 4 4 from two or more races Hispanic or Latino of any race were 120 430 persons 24 9 57 Population reported at 2010 United States CensusThe County Total Population White African American Native American Asian Pacific Islander other races two or more races Hispanic or Latino of any race Sonoma County 483 878 371 412 7 610 6 489 18 341 1 558 56 966 21 502 120 430Incorporated cities and towns Total Population White African American Native American Asian Pacific Islander other races two or more races Hispanic or Latino of any race Cloverdale 8 618 6 458 48 156 98 7 1 530 321 2 824Cotati 7 265 5 929 122 75 283 30 427 399 1 255Healdsburg 11 254 8 334 56 205 125 18 2 133 383 3 820Petaluma 57 941 46 566 801 353 2 607 129 5 103 2 382 12 453Rohnert Park 40 971 31 178 759 407 2 144 179 3 967 2 337 9 068Santa Rosa 167 815 119 158 4 079 2 808 8 746 810 23 723 8 491 47 970Sebastopol 7 379 6 509 72 60 120 19 298 301 885Sonoma 10 648 9 242 52 56 300 23 711 264 1 634Windsor 26 801 19 798 227 594 810 51 4 052 1 269 8 511Census designated places Total Population White African American Native American Asian Pacific Islander other races two or more races Hispanic or Latino of any race Bloomfield 345 282 0 0 4 0 52 7 62Bodega 220 209 0 2 2 0 0 7 9Bodega Bay 1 077 951 2 4 33 4 49 34 126Boyes Hot Springs 6 656 4 505 48 91 84 9 1 674 245 3 270Carmet 47 43 0 0 1 0 0 3 0Cazadero 354 318 1 7 5 0 5 18 23El Verano 4 123 3 054 22 22 101 12 717 195 1 559Eldridge 1 233 988 10 3 36 6 144 46 325Fetters Hot Springs Agua Caliente 4 144 2 926 25 39 68 8 895 183 1 925Forestville 3 293 2 914 32 36 53 6 153 99 406Fulton 541 349 3 12 11 1 149 16 186Geyserville 862 609 5 7 14 0 192 35 328Glen Ellen 784 693 3 9 16 3 18 42 67Graton 1 707 1 402 10 29 25 3 144 94 322Guerneville 4 534 3 926 31 68 47 12 226 224 553Jenner 136 125 2 0 2 0 0 7 8Kenwood 1 028 930 1 1 23 2 45 26 79Larkfield Wikiup 8 884 7 042 81 168 292 19 878 404 1 979Monte Rio 1 152 1 047 10 6 11 1 16 61 79Occidental 1 115 992 7 7 31 0 23 55 81Penngrove 2 522 2 212 19 24 54 2 112 99 292Roseland 6 325 3 235 130 224 276 15 2 078 367 3 773Salmon Creek 86 86 0 0 0 0 0 0 1Sea Ranch 1 305 1 220 15 3 10 0 37 20 117Sereno del Mar 126 118 1 0 1 1 2 3 8Temelec 1 441 1 376 4 4 31 5 5 16 68Timber Cove 164 152 1 1 6 0 0 4 9Valley Ford 147 105 1 0 0 0 33 8 52Other unincorporated areas Total Population White African American Native American Asian Pacific Islander other races two or more races Hispanic or Latino of any race All others not CDPs combined 90 835 76 431 930 1 008 1 871 183 7 375 3 037 16 3032000 Edit At the 2000 United States census 58 there were 458 614 people 172 403 households and 112 406 families in Sonoma County The population density was 291 sq mi 112 km2 There were 183 153 housing units at an average density of 116 sq mi 45 km2 Of the 172 403 households 50 3 were married couples living together 34 8 were non families and 10 4 had a female householder with no husband present 31 9 had children under the age of 18 living with them 25 7 were individuals and 10 0 were 65 years of age or older living alone The average household size was 2 60 and the average family size was 3 12 The median age was 38 years 24 5 were under 18 8 8 from 18 to 24 29 2 from 25 to 44 24 9 from 45 to 64 and 12 6 were 65 years of age or older For every 100 females there were 97 males For every 100 females age 18 and over there were 94 males The median household income was 53 076 and the median family income was 61 921 Males had a median income of 42 035 females 32 022 The per capita income for the county was 25 724 About 4 7 of families and 8 1 of the population were below the poverty line including 8 4 of those under age 18 and 5 7 of those age 65 or over Metropolitan Statistical Area EditThe United States Office of Management and Budget has designated Sonoma County as the Santa Rosa Petaluma CA Metropolitan Statistical Area 59 The United States Census Bureau ranked the Santa Rosa Petaluma CA Metropolitan Statistical Area as the 105th most populous metropolitan statistical area of the United States as of July 1 2012 60 The Office of Management and Budget has further designated the Santa Rosa Petaluma CA Metropolitan Statistical Area as a component of the more extensive San Jose San Francisco Oakland CA Combined Statistical Area 59 the 5th most populous combined statistical area and primary statistical area of the United States as of July 1 2012 60 61 Government EditSonoma County s governing board and legislative body is the five member Sonoma County Board of Supervisors 62 Supervisors are elected by district 63 at the Consolidated Primary Election and serve for four years The Supervisors also sit as directors of several local jurisdictions such as Sonoma Water 64 and the Agricultural Preservation amp Open Space District 65 The current supervisors as of January 2021 are District 1 Susan Gorin District 2 David Rabbitt District 3 Chris Coursey District 4 James Gore and District 5 Lynda Hopkins 66 The Supervisors appoint the members of 59 boards commissions and committees 67 The County Administrator 68 is the county s chief executive officer reporting to the Board of Supervisors The administrator manages the county s departments such as the regional parks department On December 15 2009 the Board announced 69 the appointment of Veronica Ferguson to be the first woman County Administrator She assumed office on February 1 2010 On May 1 2014 the county launched a public utility named Sonoma Clean Power 70 This utility was created under the guidelines of Community Choice Aggregation State and federal representation Edit Sonoma County is split between California s 2nd and 5th congressional districts represented by Jared Huffman D San Rafael and Mike Thompson D St Helena respectively 71 In the California State Assembly Sonoma County is split between the 2nd 4th and 10th districts which are held by Democrat Jim Wood Democrat Cecilia Aguiar Curry and Democrat Marc Levine respectively 72 In the California State Senate the county is split between the 2nd Senate District represented by Democrat Mike McGuire and the 3rd Senate District represented by Democrat Bill Dodd Law enforcement Edit The Sonoma County Sheriff s Department is the law enforcement agency for the unincorporated area of the county It also contracts to provide the police forces of the City of Sonoma and the Town of Windsor The department has more than 1 000 employees including more than 275 Deputy Sheriffs in four bureaus More than 300 Correctional Officers and staff work in two jail facilities Main Area Detention Facility and the North County Detention Facility with a total daily population of nearly 1 200 inmates 73 Police shootings in 2007 led to calls for an independent civilian police review board 74 which was established in 2015 75 Economy EditMain articles Sonoma County wine and Wine Country California Vineyard on northwest flank of Sonoma Mountain Forbes Magazine ranked the Santa Rosa metropolitan area essentially the entire county 185th out of 200 on its 2007 list of Best Places For Business And Careers 76 It was second on the list five years before Sonoma County was downgraded because of an increase in the cost of doing business and reduced job growth both blamed on increases in the cost of housing Winemaking both the growing of the grapes and their vinting is an important part of the economic and cultural life of Sonoma County In 2004 growers harvested 165 783 short tons 150 396 t s of wine grapes worth US 310 million In 2006 the Sonoma County grape harvest amounted to over 185 000 tons exceeding Napa County s harvest by more than 30 percent 77 About 80 percent of non pasture agricultural land in the county is for growing wine grapes 58 280 4 acres 235 852 km2 in 2014 of vineyards with over 1100 growers The most common varieties planted are Chardonnay Cabernet Sauvignon and Pinot noir though the area is also known for its Merlot and Zinfandel 78 Sonoma County is home to more than 350 wineries with eleven distinct and two shared American Viticultural Areas including the Sonoma Valley AVA Russian River Valley AVA Alexander Valley AVA Bennett Valley AVA and Dry Creek Valley AVA the last of which is known for the production of high quality Zinfandels citation needed Politics EditFor most of the 20th century Sonoma County was a Republican stronghold in presidential elections From 1880 until 1988 the only Democrats to carry Sonoma were Winfield Scott Hancock in 1880 Grover Cleveland in 1888 and 1892 Woodrow Wilson in 1912 Franklin D Roosevelt in 1932 and 1936 and Lyndon B Johnson in 1964 79 Like the rest of the Bay Area it has since become a Democratic stronghold The last Republican to win a majority in the county was Ronald Reagan in 1984 and the last Republican to represent a significant part of the county in Congress was Representative Donald H Clausen who left office in January 1983 Presidential elections resultsSonoma County vote by party in presidential elections 80 81 Year GOP DEM Others2020 23 0 61 825 74 5 199 938 2 4 6 5542016 22 0 51 408 68 8 160 435 9 2 21 4602012 25 3 54 784 71 0 153 942 3 8 8 1392008 24 0 55 127 73 6 168 888 2 3 5 3362004 30 9 68 204 67 2 148 261 1 9 4 2252000 32 3 63 529 59 5 117 295 8 2 16 1821996 29 5 53 555 55 6 100 738 14 9 27 0041992 24 1 47 619 52 8 104 334 23 1 45 7381988 41 9 67 725 56 5 91 262 1 6 2 5961984 51 1 76 447 47 6 71 295 1 3 1 9151980 48 2 60 722 36 2 45 596 15 6 19 6671976 47 7 50 555 47 5 50 353 4 8 5 0441972 54 7 57 697 41 5 43 746 3 8 3 9911968 48 8 38 088 43 0 33 587 8 2 6 3841964 38 4 27 677 61 5 44 354 0 2 1051960 54 1 34 641 45 5 29 147 0 4 2441956 61 9 33 659 37 9 20 616 0 2 861952 66 1 35 605 32 8 17 675 1 1 5941948 55 2 22 077 40 1 16 026 4 7 1 8811944 50 4 16 309 49 3 15 949 0 3 1111940 51 9 16 819 47 0 15 230 1 0 3301936 39 0 11 185 60 2 17 273 0 9 2481932 35 7 9 161 61 1 15 686 3 2 8221928 59 7 12 891 39 4 8 506 0 9 1941924 56 0 9 535 10 4 1 767 33 6 5 7261920 66 9 10 377 26 2 4 070 6 9 1 0651916 50 4 9 733 43 4 8 377 6 3 1 2141912 0 2 32 45 8 6 500 54 0 7 667 note 4 1908 57 5 5 427 33 6 3 168 8 9 8441904 61 6 5 269 32 9 2 816 5 4 4631900 54 0 4 381 43 4 3 517 2 6 2091896 51 9 4 053 46 0 3 595 2 2 1681892 43 4 3 016 49 7 3 451 7 0 4831888 46 9 3 293 48 4 3 394 4 6 3241884 49 4 3 044 47 7 2 944 2 7 1721880 45 4 2 290 52 1 2 628 2 4 122 Gubernatorial elections resultsSonoma County vote by party in gubernatorial elections 82 Year GOP DEM2018 27 7 58 338 72 3 152 0402014 25 2 36 249 74 8 107 3282010 30 1 55 472 64 7 119 0792006 47 0 81 608 44 6 77 3922003 35 0 54 651 40 7 63 5882002 29 9 43 408 50 4 73 0791998 29 0 46 616 64 3 103 2351994 45 7 73 234 49 7 79 7201990 38 6 54 706 55 8 79 0931986 59 4 75 003 37 9 47 8591982 45 1 55 968 51 2 63 5421978 35 9 37 584 54 3 56 9201974 48 0 40 339 48 5 40 7561970 58 6 44 823 39 2 29 9531966 60 7 41 516 39 3 26 8981962 49 7 29 647 49 2 29 373 On November 4 2008 Sonoma County voted 66 4 against Proposition 8 which amended the California Constitution to ban same sex marriages 83 According to the California Secretary of State as of February 2019 there are 277 665 registered voters in Sonoma County 84 Of those 143 054 51 5 are registered Democratic 49 386 17 8 are registered Republican and 70 244 25 3 declined to state a political party Every city town and the unincorporated areas of Sonoma County have more registered Democrats than Republicans Voter registration statistics Edit Population and registered votersTotal population 3 502 146 Registered voters 85 note 5 261 706 54 7 Democratic 85 134 896 51 5 Republican 85 56 428 21 6 Democratic Republican spread 85 78 468 29 9 Independent 85 6 619 2 5 Green 85 4 640 1 8 Libertarian 85 1 833 0 7 Peace and Freedom 85 792 0 3 Americans Elect 85 3 0 0 Other 85 829 0 3 No party preference 85 55 666 21 3 Cities by population and voter registration Edit Cities by population and voter registrationCity Population 43 Registered voters 85 note 5 Democratic 85 Republican 85 D R spread 85 Other 85 No party preference 85 Cloverdale 8 390 51 8 49 1 24 7 24 4 7 9 21 1 Cotati 7 154 57 4 52 8 17 8 35 0 10 3 22 4 Healdsburg 11 161 56 5 52 6 21 7 30 9 7 5 20 6 Petaluma 57 265 57 5 52 3 20 5 31 8 7 8 22 0 Rohnert Park 40 741 50 1 49 6 21 3 28 3 8 8 23 2 Santa Rosa 164 976 50 9 52 1 21 4 30 7 7 7 21 4 Sebastopol 7 359 69 6 61 4 11 4 50 0 9 8 19 5 Sonoma 10 430 65 0 51 2 22 8 28 4 8 1 20 8 Windsor 26 229 54 4 46 6 27 5 19 1 7 5 21 1 Education EditSee also List of school districts in Sonoma County California Higher education Edit Empire College Santa Rosa Golden Gate University Rohnert Park satellite of Walnut Creek Campus Santa Rosa Junior College Sonoma State University Rohnert Park University of San Francisco Santa Rosa Campus The educational system of Sonoma County is similar to that of other counties in California with a large number of independent districts Library system Edit The Sonoma County Library system offers a central library in downtown Santa Rosa plus 10 branch libraries and two rural stations More than half of Sonoma County s residents have library cards and borrow more than 2 5 million items per year The library s website and catalog receive over 200 000 visits annually Staff answer nearly half a million reference questions annually for individuals businesses and government agencies During a typical school year over 750 classes more than half the county total either visit a library or are visited by a children s librarian The library operates an adult literacy program and computer terminals are made available for free Internet access 86 Museums Edit City of Santa Rosa A 26 Invader attack bomber built in 1944 The Pacific Coast Air Museum is on the southeast corner of the Charles M Schulz Sonoma County Airport next to the airplane hangar used in the 1963 Hollywood movie It s a Mad Mad Mad Mad World Charles M Schulz Museum Santa Rosa Sonoma County Museum Santa Rosa Luther Burbank Home and Gardens Santa Rosa Healdsburg Museum amp Historical Society Healdsburg Hand Fan Museum of Healdsburg Healdsburg Petaluma Historical Library and Museum Petaluma Petaluma Wildlife amp Natural Science Museum Petaluma Military Antiques amp Museum Petaluma Sonoma Valley Museum of Art Sonoma Depot Park Museum Sonoma West County Museum Sebastopol Cloverdale History Museum aka The Gould Shaw House Museum Cloverdale California Indian Museum and Cultural Center Santa Rosa Cotati Museum CotatiPlaces of interest Edit Coastal prairie in the Sonoma Coast State Park north of Jenner Tolay Lake Regional Park Hood Mountain Regional Park Safari West Sonoma Raceway Sonoma Coast State Beach 87 including Arched Rock Beach Gleason Beach and Goat Rock Beach Spring Lake Regional Park Sugarloaf Ridge State Park Bodega Bay Doran Regional Park Fort Ross former Russian fur trade outpost Luther Burbank Center for the Arts Luther Burbank Home and Gardens Luther Burbank Gold Ridge Experiment Farm Quarryhill Botanic Garden Lake Sonoma Tolay Lake Regional Park Jack London State Historic Park author Jack London s Beauty Ranch in Glen Ellen Rancho Petaluma Adobe Mission San Francisco Solano across from Sonoma Plaza Armstrong Redwoods State Reserve Stillwater Cove Sonoma TrainTown RailroadPopulated places EditIncorporated Edit Sonoma County has nine incorporated municipalities Downtown Santa Rosa county seat of Sonoma County since 1854 Downtown Petaluma Incorporated communities Population 88 Incorporation Date 89 City of Cloverdale 8 618 February 28 1872City of Cotati 7 265 July 16 1963City of Healdsburg 11 254 February 20 1867City of Petaluma 57 941 April 12 1858City of Rohnert Park 40 971 August 28 1962City of Santa Rosa 167 815 March 26 1868City of Sebastopol 7 379 June 13 1902City of Sonoma 10 648 September 3 1883Town of Windsor 26 801 July 1 1992Unincorporated Edit The county also includes the following populated places which are not incorporated Census designated places Edit Bloomfield Bodega Bodega Bay Boyes Hot Springs Carmet Cazadero El Verano Eldridge Fetters Hot Springs Agua Caliente Forestville Fulton Geyserville Glen Ellen Graton Guerneville Jenner Kenwood Larkfield Wikiup Monte Rio Occidental Penngrove Roseland Salmon Creek Sea Ranch Serena del Mar Temelec Timber Cove Valley Ford Other unincorporated places Edit Annapolis Asti Bodega Harbor Bridgehaven Buena Vista Cadwell Camp Meeker Carneros Cozzens Corners Cunningham Diamond A Ranch Duncans Mills El Bonita Forest Hills Freestone The Geysers Guernewood Park Hacienda Hessel Hilton Hollydale Jimtown Kellogg Knowles Corner Korbel Lakeville Lytton Mark West Mark West Springs Mercuryville Mesa Grande Mirabel Heights Mirabel Park Mission Highlands Monte Cristo Montesano Noel Heights Northwood Oakmont Odd Fellows Park Rancho Abajo Rio Dell Rio Nido Rolands Russian River Terrace Schellville Soda Springs Stewarts Point Summerhome Park Two Rock Vacation Beach Venado Villa Grande Vineburg Former townships Edit 1884 map showing the boundaries of the county s 14 civil townships At the time of its formation the county comprised four civil townships It was restructured several times and by 1880 was made up of 14 townships 90 Analy Bodega Cloverdale Knight s Valley Mendocino Ocean Petaluma Redwood Russian River Salt Point Santa Rosa Sonoma Vallejo Washington Population ranking Edit The population ranking of the following table is based on the 2010 census of Sonoma County 91 county seat Rank City Town etc Municipal type Population 2010 Census 1 Santa Rosa City 167 8152 Petaluma City 57 9413 Rohnert Park City 40 9714 Windsor Town 26 8015 Healdsburg City 11 2546 Sonoma City 10 6487 Larkfield Wikiup CDP 8 8848 Cloverdale City 8 6189 Sebastopol City 7 37910 Cotati City 7 26511 Boyes Hot Springs CDP 6 65612 Roseland CDP 6 32513 Guerneville CDP 4 53414 Fetters Hot Springs Agua Caliente CDP 4 14415 El Verano CDP 4 12316 Forestville CDP 3 29317 Penngrove CDP 2 52218 Graton CDP 1 70719 Temelec CDP 1 44120 Sea Ranch CDP 1 30521 Eldridge CDP 1 23322 Monte Rio CDP 1 15223 Occidental CDP 1 11524 Bodega Bay CDP 1 07725 Kenwood CDP 1 02826 Geyserville CDP 86227 Glen Ellen CDP 78428 Fulton CDP 54129 Cazadero CDP 35430 Bloomfield CDP 34531 Bodega CDP 22032 Timber Cove CDP 16433 Valley Ford CDP 14734 Jenner CDP 13635 Sereno del Mar CDP 12636 Salmon Creek CDP 8637 Stewarts Point Rancheria 92 AIAN 7838 Carmet CDP 47In popular culture EditMain article Film locations in Sonoma County California Film Edit It s a Mad Mad Mad Mad World airplane hangar next to the Pacific Coast Air Museum Charles M Schulz Sonoma County Airport Due to the varied scenery in Sonoma County and proximity to the city of San Francisco a large number of movies have been filmed using venues within the county Some of the earliest U S filmmaking occurred in Sonoma County including Salomy Jane 1914 and one of Broncho Billy Anderson s 1915 Westerns Other films include the 1947 film The Farmer s Daughter starring Joseph Cotten and Loretta Young as well as two Alfred Hitchcock films Shadow of a Doubt of 1943 filmed and set in Santa Rosa and The Birds of 1963 filmed largely in Bodega Bay and Bodega American Graffiti was filmed largely in Petaluma Other films produced partially in Sonoma County include Sonoma County 1965 The Third Day 1986 Peggy Sue Got Married Petaluma including a 1950s makeover of Washington St the diner Millie s Chili Bar rechristened as The Donut Hole and exterior and interior shots of Santa Rosa High School 1993 Nowhere to Run Coleman Valley Road Occidental for farmhouse and pond scenes 2001 The Man Who Wasn t There 2001 Bandits Flamingo Hotel Clover milk truck featuring local icon Clo the cow and rural county roads Cloverdale 1955 Many Rivers to Cross Big Sulphur Creek 1993 So I Married an Axe Murderer Cloverdale Airport Glen Ellen 1982 Shoot the Moon Glen Ellen and Jack London s Wolf House Petaluma 1972 American Graffiti 1977 Heroes Bus stop at corner of Kentucky and C streets Walnut Street Russian River 1925 Braveheart Along the river 1942 Holiday Inn Village Inn Lodge in Monte Rio as the Holiday Inn with tons of artificial snow Santa Rosa 1963 It s a Mad Mad Mad Mad World Sequence involving the plane flying full bore at about 150 knots through an airplane hangar in less than a second was shot at the Charles M Schulz Sonoma County Airport Sebastopol 1949 Thieves Highway Gold Ridge Road Sonoma 1988 Tucker The Man and His Dream 1996 Scream Sonoma Community Center on East Napa Street Other Edit Bliss the default computer wallpaper of Microsoft s Windows XP operating system is a photograph of a green hill and blue sky with clouds in Sonoma County Taken in 1996 by Charles O Rear it is the most viewed photo in the world 93 See also Edit San Francisco Bay Area portal List of Sonoma County Regional Parks facilities National Register of Historic Places listings in Sonoma County California Sonoma County Historic Landmarks and Districts Sonoma County Water Agency Sonoma Mountain Zen CenterNotes Edit Only larceny theft cases involving property over 400 in value are reported as property crimes Other Some other race Two or more races Native American Native Hawaiian or other Pacific Islander American Indian or Alaska Native This total comprised 5 806 votes for Progressive Theodore Roosevelt who was official Republican nominee in California 1 494 votes for Socialist Eugene V Debs and 367 votes for Prohibition Party nominee Eugene W Chafin a b Percentage of registered voters with respect to total population Percentages of party members with respect to registered voters follow References Edit Chronology California State Association of Counties Retrieved February 6 2015 Cobb Mountain Southwest Peak Peakbagger com Retrieved February 4 2015 a b c d American FactFinder United States Census Bureau Archived from the original on February 14 2020 Retrieved April 19 2019 a b American FactFinder Archived from the original on February 14 2020 Retrieved April 19 2019 Find a County National Association of Counties Archived from the original on May 31 2011 Retrieved June 7 2011 Sonoma County Agricultural Preservation and Open Space District Sonoma County Archived from the original on December 31 2006 Retrieved July 17 2014 Sonoma County Indicators 2007 PDF Sonoma County Archived from the original PDF on September 24 2015 Retrieved July 17 2014 Cite journal requires journal help Sonoma County Flood Control and Water Conservation District History Sonoma County Water Agency Archived from the original on October 2 2009 Early California pre 1769 1840s Russian Presence Picture This Oakland Museum of California Russians establish Fort Ross in California History com November 16 2009 After making unsuccessful attempts to interest both the British and Mexicans in the fort the Russians finally found a buyer in John Sutter Bear Flag Revolt Encyclopedia com 2008 Retrieved July 23 2018 California County History CSAC org California State Association of Counties 2014 Retrieved September 22 2015 Sonoma County History Calarchives4u com Archived from the original on March 19 2014 Retrieved July 17 2014 History of Sonoma County ap net AccessPort Archived from the original on January 7 2012 Sonoma County General Plan Public Safety Element October 11 2008 Archived from the original on January 20 2008 Jones Kevin L October 11 2017 Bernie Krause s Equipment Decades of Musical Memorabilia Lost in Fires KQED Arts Retrieved October 12 2017 SFGATE Amanda Bartlett September 28 2020 Everything you need to know about the Glass Fire SFGATE Retrieved October 26 2020 a b Gudde Erwin Gustav Bright William 1998 California Place Names The Origin and Etymology of Current Geographical Names Second ed Berkeley University of California Press pp g 370 ISBN 0 520 21316 5 May James May 19 2003 Why Graton is trying to get into gaming Indian Country Today Retrieved January 25 2009 Hanna Phil Townsend 1951 The Dictionary of California Land Names Los Angeles The Automobile Club of Southern California p 311 Alfred Louis Kroeber 1976 Handbook of the Indians of California New York City N Y Dover Publications Alfred L Kroeber AAE 29 354 1932 Jesse O Sawyer 1980 The Naming of Sonoma University of California Berkeley The Bear Flag News US Gazetteer files 2010 2000 and 1990 United States Census Bureau February 12 2011 Retrieved April 23 2011 Annadel State Park Parks and Recreation in Sonoma County Archived from the original on October 11 1997 Sonoma County Climatic Zones PDF University of California Cooperative Extension Archived from the original PDF on August 12 2007 Retrieved November 30 2007 a b Forrey Rip Climate data for various locations in Sonoma Napa Mendocino Lake and Marin counties California PDF University of California Cooperative Extension Sonoma County Archived from the original PDF on June 30 2007 Retrieved November 30 2007 Freedman Wayne April 5 2006 Rainiest Town In The Bay Area Up For Sale KGO TV News Archived from the original on May 21 2011 Retrieved December 13 2007 Subsection M261Be Konocti Flows U S Forest Service Archived from the original on September 22 2011 Retrieved February 22 2014 Carolyn Jones May 27 2010 Bay Area beaches grade well for safe swimming San Francisco Chronicle The Ecology of the Laguna de Santa Rosa lagunafoundation org Laguna de Santa Rosa Foundation Archived from the original on July 22 2011 Retrieved July 17 2014 Ecology lagunadesantarosa org Laguna de Santa Rosa Foundation Archived from the original on February 6 2007 Damage to Creeks Water Supply Analyzed After Sonoma County Fires www govtech com 2017 Retrieved March 18 2019 Fisheries Enhancement Program Sonoma County Water Agency Archived from the original on October 2 2009 Marin Solono Sonoma and Contra Costa Counties borders come to a common point approx 6 miles into San Francisco Bay Thus Contra Costa County is an adjacent county Hittell Theodore Henry 1876 The codes and statutes of the State of California A L Bancroft p 515 Retrieved August 20 2012 3955 California Codes Government Codes section 23149 Retrieved August 20 2012 CityBus City of Santa Rosa Retrieved February 4 2015 About SMART sonomamarintrain org September 26 2016 Retrieved December 31 2017 Codoni Fred Trimble Paul Castelhun 2006 Northwestern Pacific Railroad Arcadia Publishing p 65 ISBN 0738531219 Sonoma Valley Railroads Sonoma Valley LocalWiki Retrieved April 1 2018 West County and Joe Rodota Trails Retrieved April 1 2018 Smart Train Service Between Marin Sonoma County To Start Aug 25 KPIX 5 CBS San Francisco CBS Broadcasting Inc August 17 2017 Retrieved August 18 2017 a b c d e f g h i j k l m n o p U S Census Bureau American Community Survey 2011 American Community Survey 5 Year Estimates Table B02001 U S Census website Retrieved October 26 2013 a b c d e f g h i j Office of the Attorney General Department of Justice State of California Table 11 Crimes 2009 Archived December 2 2013 at the Wayback Machine Retrieved November 14 2013 a b c United States Department of Justice Federal Bureau of Investigation Crime in the United States 2012 Table 8 California Retrieved November 14 2013 a b U S Census Bureau American Community Survey 2011 American Community Survey 5 Year Estimates Table B03003 U S Census website Retrieved October 26 2013 a b U S Census Bureau American Community Survey 2011 American Community Survey 5 Year Estimates Table B19301 U S Census website Retrieved October 21 2013 a b U S Census Bureau American Community Survey 2011 American Community Survey 5 Year Estimates Table B19013 U S Census website Retrieved October 21 2013 a b U S Census Bureau American Community Survey 2011 American Community Survey 5 Year Estimates Table B19113 U S Census website Retrieved October 21 2013 a b U S Census Bureau American Community Survey 2011 American Community Survey 5 Year Estimates U S Census website Retrieved October 21 2013 U S Census Bureau American Community Survey 2011 American Community Survey 5 Year Estimates Table B01003 U S Census website Retrieved October 21 2013 a b c d e f Data unavailable U S Decennial Census United States Census Bureau Retrieved May 31 2014 Historical Census Browser University of Virginia Library Retrieved May 31 2014 Population of Counties by Decennial Census 1900 to 1990 United States Census Bureau Retrieved May 31 2014 Census 2000 PHC T 4 Ranking Tables for Counties 1990 and 2000 PDF United States Census Bureau Retrieved May 31 2014 2010 Census P L 94 171 Summary File Data United States Census Bureau U S Census website United States Census Bureau Retrieved May 14 2011 a b OMB Bulletin No 13 01 Revised Delineations of Metropolitan Statistical Areas Micropolitan Statistical Areas and Combined Statistical Areas and Guidance on Uses of the Delineations of These Areas PDF United States Office of Management and Budget February 28 2013 Retrieved March 20 2013 a b Table 1 Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas April 1 2010 to July 1 2012 2012 Population Estimates United States Census Bureau Population Division March 2013 Archived from the original CSV on April 1 2013 Retrieved March 20 2013 Table 2 Annual Estimates of the Population of Combined Statistical Areas April 1 2010 to July 1 2012 2012 Population Estimates United States Census Bureau Population Division March 2013 Archived from the original CSV on May 17 2013 Retrieved March 20 2013 Board of Supervisors Sonoma County Retrieved July 17 2014 Supervisorial Districts sonoma county org Retrieved July 17 2014 Sonoma County Water Agency scwa org Retrieved July 17 2014 Sonoma County Agricultural Preservation and Open Space District sonomaopenspace org Retrieved July 17 2014 Board of Supervisors County of Sonoma Retrieved September 11 2021 Boards Commissions Committees amp Task Forces sonoma county org June 29 2011 Retrieved July 17 2014 County Administrators Office Departments and Agencies Sonoma County Archived from the original on February 9 2014 Press Release Supervisors Announce New County Administrator PDF Sonoma County December 15 2009 Retrieved July 17 2014 Cite journal requires journal help GNECKOW ERIC May 1 2014 Sonoma Clean Power flips switch for first customers The North Bay Business Journal Archived from the original on November 7 2016 Retrieved November 24 2016 California s 5th Congressional District Representatives amp District Map Civic Impulse LLC Retrieved March 1 2013 Members Assembly State of California Retrieved March 2 2013 Sheriff s Department Overview Sonoma County Sheriff s Office April 19 2002 Archived from the original on July 27 2014 Retrieved July 17 2014 Santa Rosa Press Democrat 3 30 07 Fatal police shootings rekindle review debate Recent cases raise decade old concerns over agencies abilities to investigate each other THE HISTORY OF THE INDEPENDENT OFFICE OF LAW ENFORCEMENTREVIEW AND OUTREACH IOLERO PDF Retrieved November 10 2020 Kurt Badenhausen April 5 2007 Best Places For Business And Careers Forbes Retrieved July 17 2014 2006 Sonoma County grape harvest statistics Sonoma County Vintners association Sonoma County Vintner Archived from the original on May 24 2017 Sonoma County Crop Report 2014 PDF www sonoma county org agcomm Retrieved August 11 2015 Menendez Albert J The Geography of Presidential Elections in the United States 1868 2004 pp 152 155 ISBN 0786422173 Leip David Dave Leip s Atlas of U S Presidential Elections uselectionatlas org Retrieved September 5 2018 Current Election Results Sonoma County Registrar of Voters Retrieved December 1 2016 Final Results for Consolidated General Election November 4 2014 Sonoma County Registrar of Voters Retrieved December 1 2016 Official Results Consolidated General Election 11 04 2008 PDF https elections cdn sos ca gov ror ror odd year 2019 politicalsub pdf a b c d e f g h i j k l m n o p q California Secretary of State February 10 2013 Report of Registration Archived July 27 2013 at the Wayback Machine Retrieved October 31 2013 California Library Statistics Archived February 12 2015 at the Wayback Machine California Library Statistics 2011 2012 Retrieved February 10 2015 Sonoma County Regional Parks parks sonomacounty ca gov Retrieved July 17 2014 Places in California listed alphabetically U S Census Archived from the original on December 13 2012 Retrieved October 31 2012 California Cities by Incorporation Date California Association of Local Agency Formation Commissions Archived from the original Word on February 21 2013 Retrieved August 25 2014 Munro Fraser J P 1880 History of Sonoma County Including Its Geology Topography Mountains Valleys and Streams Alley Bowen amp Co OCLC 06846293 2010 U S Census website United States Census Bureau Retrieved December 7 2017 1 Heisler Yoni July 23 2015 The Most Viewed Photo in the History of the World BGR Retrieved July 15 2018 Further reading EditAn Illustrated History of Sonoma County California Lewis Publishing Company 1889 OCLC 04107195 California Gazetteer Wilmington American Historical Publications 1985 ISBN 0937862754 OCLC 12372425 Finley Ernest L 1937 History of Sonoma County California Its People and Its Resources Santa Rosa Press Democrat Pub Co OCLC 21868591 Gille Frank H ed 1998 The Encyclopedia of California St Clair Shores Somerset Publishers Inc ISBN 9780403098705 OCLC 894506127 CS1 maint extra text authors list link Gregory Thomas Jefferson 1911 History of Sonoma County California with Biographical Sketches of the Leading Men and Women of the County Who Have Been Identified with Its Growth and Development from the Early Days to the Present Time Los Angeles Historic Record Company OCLC 04387962 Hansen Harvey J Miller Jeanne Thurlow 1962 Wild Oats in Eden Sonoma County in the 19th Century Santa Rosa OCLC 01847987 Historical Atlas Maps of Sonoma County California Oakland Thos H Thompson amp Co 1877 OCLC 06166297 Munro Fraser J P 1880 History of Sonoma County Including Its Geology Topography Mountains Valleys and Streams Alley Bowen amp Co OCLC 06846293 Taber George M 2005 Judgment of Paris California vs France and the Historic 1976 Paris Tasting that Revolutionized Wine NY Scribner ISBN 9780743247511 OCLC 58843337 Thompson Robert A 1877 Historical and Descriptive Sketch of Sonoma County California L H Everts amp Co p 1 OCLC 06840554 Thompson Robert A 1884 Central Sonoma A Brief Description of the Township and Town of Santa Rosa Sonoma County California Its Climate and Resources W M Hinton amp Company OCLC 11855702 Thompson Robert A 1896 Conquest of California Capture of Sonoma by Bear Flag Men June 14 1846 Raising of the American Flag in Monterey by Commodore John D Sloat July 7 1846 Sonoma Democrat OCLC 02540771 Thompson Robert A 1896 The Russian Settlement in California Sonoma Democrat Publishing Company OCLC 15538413 Tuomey Honoria 1926 History of Sonoma County California Chicago S J Clarke Pub Co OCLC 12074234 Volume one Volume twoExternal links EditWikimedia Commons has media related to Sonoma County California Sonoma County official website Sonoma com Sonoma Economic Development Board Sonoma County California at Curlie Parks and Recreation in Sonoma County Sonoma County Historical Society North Bay Regional Collection at Sonoma State University Library Retrieved from https en wikipedia org w index php title Sonoma County California amp oldid 1043780133, wikipedia, wiki, book,

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