About Diamond Bar — In Depth
Jail & Inmate Records
The Los Angeles County Sheriff's Department operates seven major detention facilities across Los Angeles County. Twin Towers Correctional Facility in downtown LA ranks as the largest jail in the United States, joined by Men's Central Jail, Century Regional Detention Center in Lynwood (which houses women), Pitchess Detention Center in Castaic with four camps, and the North County, East, and South facilities. Some LA County cities operate their own independent police departments and may maintain short-term holding jails (this city is not one of them — it is served by the Los Angeles County Sheriff's Department).
To locate a current inmate, residents can use the LASD Inmate Information Center at app5.lasd.org and search by name or booking number. Bail bond information, court dates, and housing location are available online. For inmates held in city jails of LA County cities that operate their own police departments (such as Long Beach, Pasadena, or Burbank), contact those city police departments directly. Note: this city is served by the Los Angeles County Sheriff's Department, not a municipal police department.
Arrest Records
Arrest records across Los Angeles County are maintained by whichever agency made the arrest, LAPD through its 21 geographic divisions, LASD at 23 patrol stations, or one of 46 independent city police departments. The California Public Records Act makes arrest records public unless they have been sealed or expunged by court order. LAPD publishes arrest data on the LA City open data portal at data.lacity.org. Those seeking LASD arrest records may request them 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 - or dismiss - eligible convictions under Penal Code §1203.4.
Criminal Records
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.
Vital Records
The California Department of Public Health's Vital Records program at https://www.cdph.ca.gov/Programs/CHSI/Pages/Vital Records.aspx is the primary source for obtaining birth certificates, death records, and marriage licenses for residents of Diamond Bar. This platform provides guidance on the application process and helps with access to these important personal documents.
Business & Licensing Records
The City of Diamond Bar's official website at https://www.diamondbarca.gov/ features a dedicated Business Directory at https://www.diamondbarca.gov/BusinessDirectoryii.aspx, where residents and entrepreneurs can explore the diverse range of commercial enterprises operating locally. This resource includes information on business licenses, zoning regulations, and economic development initiatives meant to building a thriving business environment. The directory reflects the city's commitment to supporting its commercial community in this Los Angeles County area.
Economy & Demographics
Diamond Bar's economy is characterized by a commercial sector, featuring a diverse range of retail stores, restaurants, and professional services that cater to both local People. According to the U.S. Census Bureau's QuickFacts at https://www.census.gov/quickfacts/diamondbarcitycalifornia, the city's median household income is $102,500, reflecting a thriving local economy. Major employers in the area include companies in the healthcare, technology, and financial services industries, contributing to Diamond Bar's strong economic profile.
Elections & Voter Records
Diamond Bar, Los Angeles County, California voters are served by the Los Angeles County Registrar-Recorder/County Clerk, which administers all federal, state, county, and municipal elections. The main office is located at 12400 Imperial Highway, Norwalk, CA 90650, and can be reached at 562-462-2748 or 800-815-2666. The office website at https://lavote.gov handles voter registration, ballot processing, election results certification, and campaign finance filings for all county jurisdictions including the city.
California residents can register to vote online at https://registertovote.ca.gov up to 15 days before an election, or use conditional voter registration up through Election Day. Registration requires California residency, U.S. Citizenship, age 18 or older, and a California driver's license or ID number, or the last four digits of a Social Security number. The state offers same-day voter registration during early voting and on Election Day. Municipal elections in the city focus on City Council seats, with the council selecting the mayor from among its members under a council-manager form of government with a rotating mayoral position. Council members serve four-year terms, with elections held in even-numbered years during the statewide general election in November. The community transitioned to by-district elections in 2018, establishing five council districts. Candidate filing information, campaign finance disclosures, and local ballot measures are available through the City Clerk's office at City Hall (909-839-7010) and through the county Registrar's election website. Residents can find their assigned polling location or vote center using the Los Angeles County polling place locator at https://locator.lavote.gov by entering their residential address. The county has transitioned to the Voter's Choice Act model, providing vote centers open multiple days before Election Day where any registered county voter can cast a ballot, rather than traditional precinct-based polling places. All registered voters automatically receive vote-by-mail ballots, which can be returned by mail (postmarked by Election Day), at official drop boxes throughout Los Angeles County, or at any vote center. The county's November 2024 presidential election saw approximately 4.9 million registered voters, representing roughly 75% turnout. State and local ballot measures addressing taxes, bonds, and policy initiatives will also appear. Public election records in California include voter registration statistics (but not individual voter party affiliation or ballot history for personal privacy), campaign finance reports through the California Fair Political Practices Commission at http://www.fppc.ca.gov, candidate statements and filings, and detailed precinct-level election results published by the Registrar-Recorder after certification.
Official Government Resources
Diamond Bar California Property Records
California Board of Equalization property tax and records for Diamond Bar.
Diamond Bar California Archives and Genealogy
California State Archives genealogy and historical collections for Diamond Bar.
Diamond Bar California Bankruptcy Court
US Bankruptcy Court Central District of California for Diamond Bar.
California Courts, Diamond Bar Case Search
California Courts self-help guide to court records for Diamond Bar.
Diamond Bar California Vital Records
California Department of Public Health vital records for Diamond Bar.
Diamond Bar California Missing Persons
California DOJ missing persons and unidentified persons for Diamond Bar.
Diamond Bar California Most Wanted
FBI Los Angeles Field Office most-wanted fugitives including Diamond Bar.
Diamond Bar California Sex Offender Registry
California Megan's Law sex offender search for Diamond Bar area.
Diamond Bar California Census and Vital Statistics
U.S. Census Bureau quick facts, demographics, and population statistics for Diamond Bar.
City of Diamond Bar
Directory of Diamond Bar city records and information
Diamond Bar City Clerk
Official documents and records 21825 Copley Drive Diamond Bar, CA 91765 phone: (909) 839-7015 email: CityClerk@ci.diamon
Diamond Bar Sheriff's Station
Law enforcement services 21695 E. Valley Boulevard Walnut, CA 91789 (909) 595-2264
Diamond Bar Business Directory
Business listings directory 21845 Copley Drive, Suite 1170 Diamond Bar, CA 91765 (909) 860-1904
Diamond Bar Criminal Records Search and History
Public Records Access California Attorney General Public Inquiry Unit P.O. Box 944255, Sacramento, CA 94244-2550 Phone: (800) 952-5225
Diamond Bar California Official Criminal History Background Check
Attorney General's Office California Department of Justice Attn: Public Inquiry Unit P.O. Box 944255 Sacramento, CA 94244-2550
National Center for Missing & Exploited Children (NCMEC)
Official NCMEC missing-children search. National database of active missing-child cases.
Search For Inmates in Diamond Bar and Corrections Records
California Department of Corrections and Rehabilitation inmate locator. Search for inmates currently in custody of CDCR.
Frequently Asked Questions
How do I register to vote in Diamond Bar, California?
To register to vote in Diamond Bar, California, residents can register online through the California Secretary of State's website, by mail, or in person at the Los Angeles County elections office. California requires voters to be U.S. citizens, at least 18 years old by Election Day, and residents of the state. The standard online and mail registration deadline is 15 days before an election; conditional voter registration is available after that deadline and on Election Day at county election offices and vote centers. Voters can verify their registration status and find polling locations through the California Secretary of State's voter lookup tool. For local municipal elections in Diamond Bar, contact the Los Angeles County Clerk's office for schedules and ballot information.
How do I look up property records in Diamond Bar, California?
Property records for Diamond Bar, California are maintained by the Los Angeles County Assessor's Office and the Los Angeles County Clerk and Recorder. The Assessor's Office is responsible for discovering, listing, and valuing all taxable property within Los Angeles County, including parcels in Diamond Bar. Records available include property ownership, assessed values, legal descriptions, parcel maps, and tax history. The Los Angeles County Clerk and Recorder maintains recorded documents including deeds, mortgages, liens, and easements. Many California counties provide online property record searches through their county websites. The Los Angeles County Treasurer handles property tax payments and tax sale information.
How do I get a birth or death certificate in Diamond Bar, California?
Birth, death, and marriage records for Diamond Bar, California residents are available through both county and state offices. The California Department of Public Health, Vital Records, located in Sacramento, maintains statewide vital records and can issue certified copies of birth and death certificates for events occurring anywhere in California. Orders can be placed online, by mail, or in person. Locally, the Los Angeles County Clerk's office issues marriage licenses and maintains marriage records for Los Angeles County. Birth and death certificates may also be available through local vital records offices. Requestors typically need to provide valid photo identification and proof of their relationship to the person named on the record. Processing times and fees vary by office and record type.