Government of San Joaquin County, California

The government of San Joaquin County operates as a general law county under the California Constitution and law. Much of the government of California is in practice the responsibility of county governments such as San Joaquin County. The county government provides countywide services such as elections and voter registration, law enforcement, jails, vital records, property records, tax collection, public health, and social services. In addition the county serves as the local government for all unincorporated areas.

It is composed of the elected five-member , several other elected offices including the Sheriff, , and , and numerous county departments and entities under the supervision of the County Administrator.

Some chartered cities such as Stockton and Tracy provide municipal services such as police, public safety, libraries, parks and recreation, and zoning. Some other cities arrange to have the County provide some or all of these services on a contract basis. In addition, several entities of the government of California have jurisdiction conterminous with San Joaquin County, such as the San Joaquin County Superior Court.