LASD

The Los Angeles County Sheriff's Department (LASD), sometimes referred to as the Los Angeles County Sheriff's Office (LASO), is a local county law enforcement agency that serves Los Angeles County, California. It is the fourth largest local policing agency in the United States, with the New York City Police Department being the first, followed by Chicago Police Department and then the Los Angeles Police Department.

The Los Angeles County Sheriff's Department is the largest sheriff's department in the world, and provides general-service law enforcement to unincorporated areas of Los Angeles County, serving as the equivalent of the county police for unincorporated areas of the county, as well as incorporated cities within the county who have contracted with the agency for law-enforcement services (known as "contract cities"). Forty-two of the county's 88 municipalities contract with the Sheriff’s Department to provide local police protection. These cities, range in population from 700 to 175,000, and in size from 1 to 100 square miles.

The Sheriff's Department also holds primary jurisdiction over facilities operated by Los Angeles County, such as local parks, marinas and government buildings; provides bailiff service for the Superior Court of Los Angeles County; operates the county jail system; and provides services, such as crime laboratories, homicide investigations, and academy training, to smaller law enforcement agencies within the county.

The Los Angeles County Sheriff's Department is also the second largest transit police force in the nation, aside from the NYPD, through policing contracts of the Metro trains and buses of the Los Angeles Metropolitan Transportation Authority and Metrolink. Furthermore, with policing contracts with nine campuses of the Los Angeles Community College and Lancaster Community College District, the LASD is the largest community policing agency in the United States. The department's headquarters are in Monterey Park.

Read more about LASD:  Personnel, Organization, Academy, County Jail System, Achievements, Reserve Program, Demographics, Rank and Insignia, History, Members Killed On Duty, Awards, Commendations, Citations and Medals, Controversy, In Popular Culture