Stockton is also seat of San Joaquin County, for which the government of San Joaquin County is defined and authorized under the California Constitution and law as a general law 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. The county government is primarily composed of the elected five-member Board of Supervisors and other elected offices including the Sheriff, District Attorney, and Assessor, and numerous county departments and entities under the supervision of the county administrator.