San Joaquin County, California

San Joaquin County /ˈsæn wɑːˈkiːn/ is a county in the U.S. state of California. As of the 2010 census, the population was 685,306. The county seat is Stockton.

San Joaquin County comprises the Stockton-Lodi, CA Metropolitan Statistical Area, which is also included in the San Jose-San Francisco-Oakland, CA Combined Statistical Area. The county is located in the Central Valley, just east of the nine-county San Francisco Bay Area region.