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About LA County

Los Angeles County, one of California's original 27 counties, was established on Feb. 18, 1850.  It is one of the nation's largest counties with 4,084 square miles, and has the largest population of any county in the nation - nearly 10 million residents who account for approximately 27 percent of California's population. As a subdivision of the state, the County is charged with providing numerous services that affect the lives of all residents, including law enforcement, tax collection, public health protection, public social services, elections and flood control.

Link to County Holidays County Holidays
Link to Mobile Apps Mobile Apps
Link to Annual Report Annual Report
Link to Official Song & Flag Official Song & Flag
Link to County Seal County Seal
Link to Organizational Chart (PDF) Organizational Chart (PDF)
Link to Unincorporated Areas Unincorporated Areas
Link to Incorporated Cities Incorporated Cities
Link to History History
Link to County Insignia History County Insignia History
Link to Charter of the County of Los Angeles Charter of the County of Los Angeles