According to the U.S. Bureau of Justice Statistics' 2008 Census of State and Local Law Enforcement Agencies, 509 law enforcement agencies exist in the U.S. state of California, employing 79,431 sworn police officersâÂÂabout 217 for each 100,000 residents.
California police officers' authority is derived from the California Penal Code (PC) beginning with Section 830. PC 830.1 includes the California Department of Justice (CA DOJ) along with local and county agencies. PC 830.2 includes the California Highway Patrol (CHP) and nine other state agencies. PC 830.3 includes 21 state agencies with law enforcement divisions.
The California Commission on Peace Officer Standards and Training maintains a list of state law enforcement agencies on its website.
State agencies
County agencies
Municipal agencies
Tribal agencies
College and university agencies
Community colleges
KâÂÂ12 school agencies
Special district and other agencies
Animal
Parks
Transit
Airport
Port and harbor
Defunct agencies
- California State Police (merged into California Highway Patrol in 1995)
- California State Rangers (disbanded in 1853)
- California Bureau of Narcotic Enforcement (merged into California Bureau of Investigation in 2012)
- Alviso Police Department (merged into San Jose Police Department in 1968, when City of Alviso annexed into City of San Jose)
- Avalon Police Department (replaced by Los Angeles County Sheriff's Department in 1962)
- Blue Lake Police Department (merged with Humboldt County Sheriff's Department in 2008, partially replaced by Blue Lake Rancheria Tribal Police Department)
- Compton Police Department (disbanded in 2000, replaced by Los Angeles County Sheriff's Department)
- Dorris Police Department (replaced by Siskiyou County Sheriff's Office in 1996)
- Dunsmuir Police Department (replaced by Siskiyou County Sheriff's Office in 1992)
- Ft. Jones Police Department (replaced by Etna Police Department in December 12, 2019)
- Grossmont-Cuyamaca Community College Police Department (replaced by San Diego County Sheriff's Department in 2013)
- Half Moon Bay Police Department (replaced by San Mateo County Sheriff's Office in 2011)
- Holtville Police Department (merged into Imperial County Sheriffs' Office in 2010)
- Housing Authority City of Los Angeles Police Department (replaced by Los Angeles Police Department, December 31, 2003)
- Imperial Beach Police Department (merged into San Diego County Sheriff's Department, 1982)
- Isleton Police Department (replaced by Sacramento County Sheriff's Department, 2012)
- Los Angeles City Marshal (disbanded in 1876)
- Los Angeles General Services Police (now replaced by Los Angeles Police Department (LAPD) Security Services Division in 2012)
- Los Angeles Community College District Police Department (merged into LASD Community College Bureau in 2001)
- Los Angeles County Office of Public Safety (dissolved in 2010, duties assumed by the LASD County Services Bureau and Parks Bureau)
- Los Angeles County MarshalâÂÂs Department (merged into Los Angeles County SheriffâÂÂs Department in 1994)
- Los Angeles County Metropolitan Transportation Authority Transit Police Department (disbanded, assets divided between LAPD and LASD, 1997; formerly the Southern California Rapid Transit District (RTD) Transit Police Department and RTD Transit Public Safety Department)
- Los Angeles Metropolitan Transit Authority Special Agents Department
- Los Angeles Railway Special Agents Department (merged into Los Angeles Metropolitan Transit Authority Special Agents Department, 1958)
- Maricopa Police Department (merged into Kern County Sheriff's Office in 2011)
- Maywood-Cudahy Police Department (disbanded, June 30, 2010; replaced by LASD)
- Millbrae Police Department (replaced by San Mateo County Sheriff's Office in 2012)
- Montague Police Department (replaced by Siskiyou County Sheriff's Office in 1983)
- Needles Police Department (ceased as independent Police Department, now part of San Bernardino County SheriffâÂÂs Department under contract policing in 1989)
- Oakland Unified School District Police Department (disbanded in 2020)
- Orange County MarshalâÂÂs Department (absorbed into Orange County Sheriff's Department in 1 July 2000)
- Pacific Electric Special Agents Department (merged into Los Angeles Metropolitan Transit Authority Special Agents Department, 1958)
- San Benito County Marshal's Office (closed in 2010, duties transferred to San Benito County Sheriff's Office Civil Bureau)
- San Bernardino County MarshalâÂÂs Department (Merged into San Bernardino County Sheriff's Department Court Services Division in 1999)
- Santa Clara County Transit Police (replaced by Santa Clara County Sheriff's Department Transit Patrol Division)
- San Anselmo Police Department (merged into Twin Cities Police Authority to form Central Marin Police Authority in 2013)
- San Carlos Police Department (replaced by San Mateo County Sheriff's Office in 2010)
- San Diego County Marshal's Office (merged into San Diego County Sheriff's Department Court Services Bureau on January 1, 2000)
- San Juan Bautista Police Department (replaced by San Benito County SheriffâÂÂs Office in 1993)
- Stanton Police Department (merged into Orange County Sheriff's Department (OCSD), February 1988)
- San Francisco Patrol Special Police (disbanded in 2024)
- Trinidad Police Department (duties assumed by Humboldt County Sheriff's Department, 2010; partially replaced by Trinidad Rancheria Police Department)
- Twin Cities Police Authority (merged with San Anselmo Police Department form into Central Marin Police Authority in 2013)
- Willows Police Department (replaced by Glenn County Sheriff's Office, July 1, 2017)
See also
References