Government of Los Angeles County

The Government of Los Angeles County is defined and authorized under the California Constitution, California law, and the Charter of the County of Los Angeles. Much of the Government of California is in practice the responsibility of county governments, such as the Government of Los Angeles County. The County government provides countywide services such as elections and voter registration, law enforcement, jails, vital records, property records, tax collection, public health, health care, and social services. In addition the County serves as the local government for all unincorporated areas.

It is composed of the elected five-member Board of Supervisors, several other elected offices including the Sheriff, District Attorney, and Assessor, and numerous county departments and entities under the supervision of the Chief Executive Officer.

Some chartered cities such as Los Angeles and Inglewood provide municipal services such as police, libraries, parks and recreation, and zoning. Other cities arrange to have the County provide some or all of these services under contract. In addition, several entities of the government of California have jurisdiction coterminous with Los Angeles County, such as the Los Angeles Superior Court.

Under its foundational Charter, the five-member elected Los Angeles County Board of Supervisors (BOS) is the county legislature. The board operates in a legislative, executive, and quasi-judicial capacity. As a legislative authority, it can pass ordinances for the unincorporated areas (ordinances that affect the whole county, like posting of restaurant ratings, must be ratified by the individual city). As an executive body, it can tell the county departments what to do, and how to do it. As a quasi-judicial body, the Board is the final venue of appeal in the local planning process, and holds public hearings on various agenda items. These were the board members as of 5 December 2016:

...
Wikipedia