Stanislaus County, California


Stanislaus County is a county located in the San Joaquin Valley of the U.S. state of California. As of 2023, its estimated population is 564,404. The county seat is Modesto.
Stanislaus County makes up the Modesto metropolitan statistical area. The county is located just east of the San Francisco Bay Area and serves as a bedroom community for those who work in the eastern part of the Bay Area.

History

The first European to see the area was Gabriel Moraga in 1806.
The county was named after the Estanislao River, which in turn was named in honor of Estanislao, a mission-educated renegade Native American chief who led a band of Native Americans in a series of battles against Mexican troops until finally being defeated by General Mariano Vallejo in 1826. Estanislao was his baptismal name, the Spanish name version after Saint Stanislaus the Martyr.
Between 1843 and 1846, when California was a province of independent Mexico, five Mexican land grants totaling were granted in Stanislaus County. Rancho Orestimba y Las Garzas, Rancho Pescadero and Rancho Del Puerto were located on the west side of the San Joaquin River, and Del Rio Estanislao">Del Rio, California">Del Rio Estanislao and Rancho Thompson were on the north side of the Stanislaus River. Additionally in 1844, Salomon Pico received a Mexican land grant of in the San Joaquin Valley, somewhere near the Stanislaus River and the San Joaquin River in what is now Stanislaus County. However, the grant was never confirmed by the land commission.
Stanislaus County was formed from part of Tuolumne County in 1854. The county seat was first situated at Adamsville, then moved to Empire in November, La Grange in December, and Knights Ferry in 1862, and was ultimately fixed at the present location in Modesto in 1871.
As the price of housing has increased in the San Francisco Bay Area, many people who work in the southern reaches of the Bay Area have opted for the longer commute and moved to Stanislaus County for the relatively affordable housing.

Geography

According to the U.S. Census Bureau, the county has a total area of, of which are covered by water.
Stanislaus County has historically been divided socially and economically by the north-flowing San Joaquin River, which provided a natural barrier to trade and travel for much of the county's history. Isolated from the main rail corridors through the county and the irrigation projects that generated much of the region's economic prosperity, the part of Stanislaus County west of the river has largely remained rural and economically dependent on agricultural activities. Because of its proximity to Interstate 5 and the California Aqueduct, some towns within this area, including Patterson and Newman, have experienced tremendous growth and are being transformed into bedroom communities for commuters from the nearby San Francisco Bay Area, while others have been almost entirely overlooked by development and remain tiny farming communities.

Flora and fauna

A number of rare and endangered species are found in Stanislaus County. The beaked clarkia,, is listed as a candidate for the federal endangered species list. It has only been found in blue oak-gray pine associations in the foothills of the Sierra Nevada, a habitat that occurs at moderately high elevations. Colusa grass, is listed as endangered by the state. It is restricted to vernal pools.

National protected area

Transportation

Major highways

Public transportation

Airports

has previously had a number of scheduled passenger flights. Currently, its main air traffic is general aviation. Other airports around the county include Oakdale Airport, Patterson Airport, and Turlock Airpark.

Demographics

2020 census

As of the 2020 census, the county had a population of 552,878. The median age was 35.5 years. 26.2% of residents were under the age of 18 and 14.2% of residents were 65 years of age or older. For every 100 females there were 97.2 males, and for every 100 females age 18 and over there were 94.7 males age 18 and over.
The racial makeup of the county was 46.4% White, 2.9% Black or African American, 1.9% American Indian and Alaska Native, 6.3% Asian, 0.8% Native Hawaiian and Pacific Islander, 26.4% from some other race, and 15.3% from two or more races. Hispanic or Latino residents of any race comprised 48.1% of the population.
91.8% of residents lived in urban areas, while 8.2% lived in rural areas.
There were 176,738 households in the county, of which 40.2% had children under the age of 18 living with them and 25.1% had a female householder with no spouse or partner present. About 19.2% of all households were made up of individuals and 9.1% had someone living alone who was 65 years of age or older.
There were 183,140 housing units, of which 3.5% were vacant. Among occupied housing units, 59.8% were owner-occupied and 40.2% were renter-occupied. The homeowner vacancy rate was 0.9% and the rental vacancy rate was 3.3%.

2010 Census

The 2010 United States census reported that Stanislaus County had a population of 514,453. The racial makeup of Stanislaus County was 337,342 White, 14,721 African American, 5,902 Native American, 26,090 Asian, 3,401 Pacific Islander, 99,210 from other races, and 27,787 from two or more races. Hispanics or Latinos of any race were 215,658 persons ; 37.6% of Stanislaus County is Mexican, 0.6% Puerto Rican, 0.5% Salvadoran, 0.2% Nicaraguan, and 0.2% Guatemalan.

2000

As of the census of 2000, 446,997 people, 145,146 households, and 109,585 families were residing in the county. The population density was. The 150,807 housing units had an average density of. The racial/ethnic makeup of the county was 69.3% White, 2.6% Black, 4.2% Asian, 1.3% Native American, 0.3% Pacific Islander, 16.8% from other races, and 5.4% from two or more races. About 31.7% of the population were Hispanic or Latino of any race; 8.4% were of German, 6.3% English, 6.0% American, 5.5% Irish, and 5.1% Portuguese ancestry according to Census 2000. About 67.8% spoke English, 23.7% Spanish, 1.5% Syriac, and 1.3% Portuguese as their first languages.
Of the 145,146 households, 41.2% had children under 18 living with them, 56.0% were married couples living together, 13.7% had a female householder with no husband present, and 24.5% were not families. About 19.4% of all households were made up of individuals, and 7.9% had someone living alone who was 65 or older. The average household size was 3.03, and the average family size was 3.47.
In the county, the age distribution was 31.1% under 18, 9.8% from 18 to 24, 29.0% from 25 to 44, 19.5% from 45 to 64, and 10.4% who were 65 or older. The median age was 32 years. For every 100 females, there were 96.8 males. For every 100 females 18 and over, there were 93.4 males.
The median income for a household in the county was $40,101, and for a family was $44,703. Males had a median income of $36,969 versus $26,595 for females. The per capita income for the county was $16,913. About 12.3% of families and 16.0% of the population were below the poverty line, including 20.5% of those under 18 and 8.8% of those 65 or over.

Metropolitan statistical area

The United States Office of Management and Budget has designated Stanislaus County as the Modesto, CA metropolitan statistical area. The United States Census Bureau ranked the Modesto MSA as the 103rd-most populous MSA of the United States as of July 1, 2012.
The Office of Management and Budget has further designated the Modesto MSA as a component of the more extensive San Francisco-Oakland-San Jose, CA combined statistical area, the 5th-most populous combined statistical area in the United States.

Crime

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

Government, politics, and policing

Government

The government of Stanislaus County is defined and authorized under the California Constitution and law as a [Charter county|general law county]. The county government provides countywide services such as elections and voter registration, law enforcement, jails, vital records, property records, tax collection, public health, and social services. In addition, the county serves as the local government for all unincorporated areas.
The county government is composed of the elected five-member board of supervisors, several other elected offices including the sheriff-coroner, district attorney, tax assessor, auditor-controller, treasurer-tax collector, and clerk-recorder, and numerous county departments and entities under the supervision of the chief executive officer. As of January 2025, the members of the Stanislaus County Board of Supervisors were:
  • Buck Condit, District 1, chairman
  • Vito Chiesa, District 2, vice chairman
  • Terry Withrow, District 3
  • Mani Grewal, District 4
  • Channce Condit, District 5

Policing

Sheriff

The Stanislaus County Sheriff provides court protection, jail administration, and coroner services for the entire county. It provides patrol and detective services for the unincorporated areas of the county. The sheriff also provides law-enforcement services by contract to the municipalities of Riverbank, Patterson, Waterford, Salida, and Hughson. These municipalities fund police coverage as specified in the respective sheriff's contract with each city.

Municipal police

Municipal police departments in the county are: Modesto, population 213,000; Turlock, 73,000; Ceres, 46,000; Oakdale, 23,000; Newman 11,000.

Politics

Voter registration statistics

Cities by population and voter registration

Overview

Just like neighboring Merced County, Stanislaus is considered a bellwether county in presidential elections. The last major-party nominee to gain over 60% of the vote was Lyndon B. Johnson in 1964 [United States presidential election in California|1964]. Furthermore, in 1960, Stanislaus County was one of the most bellwether counties in terms of the popular vote, voting 0.02% more Democratic than the national average. It has voted for the winning candidate for president in every election since 1972, except in 2016 when it voted for Hillary Clinton instead of Donald Trump. In 2024, Donald Trump won the county in a decisive victory, continuing the county's bellwether county status.
Trump's win in Stanislaus County made it one of ten counties in California to flip from Biden to Trump, as well as making Stanislaus one of six counties to vote for the Republican presidential candidate for the first time in 20 years since George W. Bush in 2004. The last Democrat to win a majority in the county was Jimmy Carter in 1976, although Barack Obama won a plurality in 2008 and 2012, as did Bill Clinton in both 1992 and 1996, and as Biden did in 2020.































In the United States House of Representatives, Stanislaus County is split between,, and.
In the California State Senate, Stanislaus is represented by:
In the California State Assembly, Stanislaus is split between the 22nd Assembly District, represented by Republican Juan Alanis, and the 9th Assembly District, represented by Republican Heath Flora.

Economy

is Stanislaus County's number one industry, with almonds being the primary agricultural product.

Education

Tertiary

The California State University, Stanislaus is a campus of the California State University located in Turlock.
The Yosemite Community College District covers a 4,500-sq-mi area and serves a population over 550,000, encompassing all of two counties and parts of four others. It is composed of two colleges: Modesto Junior College in Modesto and Columbia College in Sonora in Tuolumne County to the northeast.
Kaplan College has a campus in Modesto, ITT Technical Institute has campus in Lathrop in San Joaquin County to the northeast, and San Joaquin Valley College has campus in Modesto.

K-12 education

School districts include:
Unified:
Secondary:
Elementary:

Media

Stanislaus County is in the Sacramento television market, thus receives Sacramento media.
The county also has media outlets that serve the local community:
  • is the local online news site for Modesto and the surrounding areas of the Central Valley.
  • is a Modesto-based daily newspaper.

Communities

Incorporated cities

Census-designated places

Other unincorporated communities

Population ranking

The population ranking of the following table is based on the 2020 census of Stanislaus County.
† county seat
RankCity/Town/etc.Municipal typePopulation
1† 'ModestoCity218,464
2TurlockCity72,740
3CeresCity49,302
4RiverbankCity24,865
5PattersonCity23,781
6OakdaleCity23,181
7SalidaCDP13,886
8NewmanCity12,351
9WaterfordCity9,120
10HughsonCity7,481
11West ModestoCDP5,965
12KeyesCDP5,672
13Bret HarteCDP5,135
14DenairCDP4,865
15EmpireCDP4,202
16BystromCDP3,957
17East OakdaleCDP3,201
18RouseCDP1,913
19Diablo GrandeCDP1,669
20Del RioCDP1,399
21AirportCDP1,389
22ParklawnCDP1,249
23Orange BlossomCDP1,068
24Riverdale ParkCDP1,053
25GraysonCDP1,041
26HickmanCDP604
27WestleyCDP575
28CowanCDP342
29Crows LandingCDP322
30Valley HomeCDP284
31Monterey Park TractCDP164
32La GrangeCDP166
33Knights Ferry'CDP112