San Joaquin County, California
San Joaquin County, California | |
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| San Joaquin County | |
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Top: Downtown Stockton waterfront; Bottom: Stanislaus River at Caswell Memorial State Park | |
| Nickname: "Sanwa" | |
| Motto: "Greatness grows here." | |
Interactive map of San Joaquin County | |
Location in the state of California | |
| Country | United States |
| State | California |
| Region | San Joaquin Valley |
| Incorporated | February 18, 1850 |
| Named after | San Joaquin River, which was named for St. Joachim |
| County seat | Stockton |
| Largest city | Stockton |
| Government | |
| • Type | Council–Administrator |
| • Body | Board of Supervisors |
| • Chair | Paul Canepa |
| • Vice Chair | Sonny Dhaliwal |
| • Board of Supervisors | Supervisors
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| • County Administrator | Jerome C. Wilverding |
| Area | |
• Total | 1,426 sq mi (3,690 km2) |
| • Land | 1,391 sq mi (3,600 km2) |
| • Water | 35 sq mi (90 km2) |
| Highest elevation | 3,629 ft (1,106 m) |
| Population (2020) | |
• Total | 779,233 |
| • Density | 550/sq mi (210/km2) |
| GDP | |
| • Total | $40.227 billion (2022) |
| Time zone | UTC−8 (Pacific Standard Time) |
| • Summer (DST) | UTC−7 (Pacific Daylight Time) |
| Area code(s) | 209, 350 |
| FIPS code | 06-077 |
| GNIS feature ID | 277303 |
| Congressional districts | 9th, 13th |
| Website | www |
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San Joaquin County (/ˌsæn hwɑːˈkiːn/ ⓘ SAN whah-KEEN; Spanish: San Joaquín, meaning "St. Joachim"), officially the County of San Joaquin, is a county located in the U.S. state of California. As of the 2020 United States census, the population was 779,233. The county seat is Stockton.
San Joaquin County comprises the Stockton–Lodi–Tracy metropolitan statistical area within the regional San Jose–San Francisco–Oakland combined statistical area. The county is located in Northern California's Central Valley just east of the very highly populated nine-county San Francisco Bay Area region and is separated from the Bay Area by the Diablo Range, having access to the Bay Area via the Altamont Pass. One of the smaller counties by area in California, it has a high population density and is growing rapidly due to overflow from the Bay Area.
The City of San Joaquin, despite sharing its name with the county, is located in Fresno County.