Government of San Joaquin County, California

Some chartered cities such as Stockton and Tracy provide municipal services such as police, public safety, libraries, parks and recreation, and zoning.

As of January 2019, the members of the San Joaquin County Board of Supervisors are: In addition to the Board of Supervisors, there are several elected officers that form the Government of San Joaquin County that are required by the California Constitution and California law.

Historically, the courthouses were county-owned buildings that were maintained at county expense, which created significant friction since the trial court judges, as officials of the state government, had to lobby the county Board of Supervisors for facility renovations and upgrades.

The California Department of Corrections and Rehabilitation operates the Deuel Vocational Institution, a state prison, in unincorporated San Joaquin County, near Tracy.

The San Joaquin County Local Agency Formation Commission is the Local Agency Formation Commission (LAFCo) for San Joaquin County and regulates most special district and city boundaries.