With 17,694 total employees the Los Angeles County Sheriff’s Department , officially the County of Los Angeles Sheriff's Department, is the nation's largest Sheriff’s Department, and the second largest law enforcement agency in the United States. The Department’s three main responsibilities entail providing patrol services for 153 unincorporated communities of Los Angeles County, California and 42 of 88 cities., providing courthouse security for the Superior Court of Los Angeles County, and the housing and transportation of inmates within the county jail system. In addition, the Department contracts with the Los Angeles Metropolitan Transportation Authority and Metro link, provides law enforcement services to ten community colleges, patrols 177 county parks, golf courses, special event ven