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Los Angeles County is the most populous county in the United States, home to over 10 million residents across 4,751 square miles of diverse terrain — from the Santa Monica Mountains and San Fernando Valley to beach cities, urban neighborhoods, and the largest unincorporated area in California. Established in 1850 as one of California's original 27 counties, its county seat is the City of Los Angeles. The county encompasses 88 incorporated cities plus vast unincorporated territory, making it a patchwork of overlapping jurisdictions — 46 cities maintain their own police departments while 42 contract with the LA County Sheriff's Department (LASD). Public records are governed by the California Public Records Act (CPRA), Cal. Gov't Code §7922.530, which mandates a 10-day response window and requires electronic records to be provided free of charge.
The Los Angeles County Sheriff's Department (LASD) is the largest sheriff's department in the world, with approximately 10,000 sworn deputies. LASD provides law enforcement services to unincorporated LA County and 42 contract cities. It operates 7 jail facilities — including Twin Towers Correctional Facility, Men's Central Jail, and Century Regional Detention Center — collectively housing roughly 17,000 inmates, making it the world's largest local jail system. LASD also runs 23 patrol stations countywide. Arrest records, booking photos, and inmate information are available through the LASD Inmate Information Center at app5.lasd.org. Records requests go to the LASD Records Bureau at (323) 526-5541. Under SB 2 (2023), LASD must proactively release sustained officer misconduct and use-of-force incident records.
LASD operates 7 major detention facilities in Los Angeles County: Twin Towers Correctional Facility (downtown LA, largest in the US), Men's Central Jail (MCJ), Century Regional Detention Center (Lynwood, houses women), Pitchess Detention Center (Castaic, 4 camps), North County Correctional Facility, East Facility, and South Facility. Each city with its own police department may also operate a city jail for short-term holds. To find a current inmate, use the LASD Inmate Information Center (app5.lasd.org) and search by name or booking number. Bail bond information, court dates, and housing location are available online. For inmates in city jails — Long Beach, Pasadena, Burbank, etc. — contact each city's police department directly.
Arrest records in Los Angeles County are maintained by the arresting agency — LAPD (21 geographic divisions), LASD (23 patrol stations), or one of 46 independent city police departments. Under the California Public Records Act, arrest records are public unless sealed or expunged by court order. LAPD arrest data is published on the LA City open data portal (data.lacity.org). LASD arrest records may be requested from the LASD Records Bureau. California Proposition 57 (2016) and AB 1950 (2021) have modified certain sentence and probation rules that affect record visibility. Individuals may petition LA Superior Court to expunge (dismiss) eligible convictions under Penal Code §1203.4.
Booking photos (mugshots) in Los Angeles County are maintained by the arresting agency. LASD booking photos are accessible through the online Inmate Information Center for current and recently released detainees. LAPD booking photos are not routinely published online; requests must be submitted to the LAPD Records and Identification Division. California law (AB 1475, 2014) limits commercial mugshot websites from charging removal fees, providing some consumer protection. For historical booking photos, submit a formal CPRA request to the relevant agency Records Bureau.
Los Angeles County is policed by a complex multi-agency patchwork. LAPD serves the City of Los Angeles across 21 geographic divisions and approximately 9,000 sworn officers. LASD serves unincorporated areas and 42 contract cities from 23 patrol stations. Independent municipal departments include Long Beach PD, Pasadena PD, Burbank PD, Glendale PD, Santa Monica PD, and 41 others. The LA Metro Transit Authority has its own transit police force. The California Highway Patrol (CHP) covers freeways and unincorporated areas. LAPD crime data is published at data.lacity.org. Under SB 2 (2023), all California law enforcement agencies must proactively disclose sustained misconduct records, use-of-force incidents, and officer-involved shooting investigations.
Criminal records in Los Angeles County are maintained at multiple levels. Felony and misdemeanor convictions are held by the LA Superior Court District Clerk and searchable online at lacourt.org. State-level criminal history is maintained by the California DOJ and accessible via Live Scan fingerprint background checks through authorized providers (oag.ca.gov/fingerprints). Name-based checks ($25) are available for non-criminal-justice purposes. The FBI maintains a national criminal history database (NCIC) accessible to law enforcement. Sex offender registration is handled by LAPD and LASD, with public lookup at meganslaw.ca.gov. California does not have a centralized online felony lookup — court records must be searched by county.
The Los Angeles County Superior Court is the largest trial court system in the United States, with approximately 600 judges and commissioners operating across 38 courthouse locations. The court handles civil, criminal, family, probate, juvenile, and appellate matters. Criminal case summaries are searchable free online at lacourt.org. Civil case records can be accessed at the courthouse or through the court's online portal. The Central District of California (federal court, Roybal Federal Building) handles federal civil and criminal matters. PACER (pacer.gov) provides access to all federal court filings. Small claims matters up to $12,500 are handled at local courthouse small claims divisions. Court filing fees vary by case type; fee waivers (FW-001) are available for low-income filers.
Public records in Los Angeles County are governed by the California Public Records Act (CPRA), Cal. Gov't Code §7922.530. Any person — regardless of California residency — may request records from any county or city agency. Agencies must respond within 10 calendar days and may extend by 14 days for unusual circumstances. The LA County Registrar-Recorder/County Clerk (12400 Imperial Hwy, Norwalk) is the central repository for vital records and property recordings. The LA County Assessor (500 W. Temple St) maintains the nation's largest assessment roll. Electronic records must be provided free of charge when already in digital format. Fees for paper copies are capped at the direct cost of duplication — typically $0.10 per page. SB 2 (2023) expanded mandatory disclosure of LAPD and LASD officer misconduct records without requiring a CPRA request.
Los Angeles County has the largest economy of any county in the United States, with a GDP exceeding $800 billion — larger than most countries. Key industries include entertainment and media (home to major studios: Universal, Warner Bros., Disney, Netflix), international trade (Port of Los Angeles and Port of Long Beach together constitute the nation's busiest port complex), aerospace and defense (Boeing, Northrop Grumman, SpaceX), healthcare (Cedars-Sinai, UCLA Health, Kaiser Permanente), and technology (Silicon Beach corridor in Santa Monica, Culver City, and Playa Vista). The county is home to LAX (one of the world's busiest airports), major universities including UCLA and USC, and a tourism industry generating over $20 billion annually. The 2028 Olympic Games will be hosted in Los Angeles, driving significant infrastructure investment through 2028.