San Joaquin County, 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.
Country: United States
State: California
Region: San Joaquin Valley
Incorporated: February 18, 1850
Named for: San Joaquin River, which was named for St. Joachim
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