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San Joaquin County, California


San Joaquin County administrative offices are located at 44 North San Joaquin Street, Stockton, CA 95202; phone: 209‑468‑2350.

San Joaquin County Neighborhoods

San Joaquin County was established in 1850. Stockton City is the county seat. The San Joaquin river was named by an explorer in the early 1800s. The county is named for the river.

TOWNS

HISTORIC SITES