San Joaquin County, California

county in California, United States

San Joaquin County (/ˌsæn hwɑːˈkn/) is a county in the U.S. state of California. As of the 2020 census, the population was 779,233.[1] The county seat and largest city is Stockton.[2] It was founded in 1850.


  1. "QuickFacts: San Joaquin County, California". U.S. Census Bureau. Retrieved August 1, 2023.
  2. "Find a County". National Association of Counties. Retrieved 2011-06-07.