California, Contra Costa County
Where Antioch's records are kept. Antioch has its own city government and clerk's office; county and state offices keep its other public records.
Start here
The cards below include Antioch's own offices, along with State of California offices; the Contra Costa County offices are on our Contra Costa County page. Use the category buttons to narrow the list.
Police & jail
The California Department of Justice sends people a copy of their own state criminal history to review: Live Scan or card fingerprints and a $25 fee are required, and third party requests are refused.
Open official site California DOJ Request Your Own Criminal RecordProperty records
Oversees how California's 58 county assessors apply property tax law, audits their practices, certifies appraisers and itself assesses utility and railroad property and pipelines spanning two or more counties.
Open official site California State Board of Equalization Property Tax DepartmentState records
The Secretary of State's archives holds over 105,000 cubic feet of California government records, maps and photographs, described in its Minerva catalog, including court, legislative, land grant and family history collections.
Open official site California State Archives CollectionsCounty court
Sits in San Francisco, Oakland, Santa Rosa and San Jose and posts judges' and 341 meeting calendars, local rules, forms and guidance for people filing without an attorney.
Open official site U.S. Bankruptcy Court for the Northern District of CaliforniaCounty court
The Judicial Branch of California runs Find Your Court: enter a five digit California zip code or a city name to see the court locations nearest to it.
Open official site Judicial Branch of California Find Your CourtVital records
Keeps California birth, death, fetal death, marriage and divorce records, issues certified copies and registers or amends records as the law allows. Accepted orders cannot be canceled or refunded.
Open official site California Department of Public Health Vital RecordsState records
The California Department of Justice unit that helps police locate missing people and identify unknown persons; its missing persons database, searchable by name, county and description, holds a subset of reported cases.
Open official site California DOJ Missing and Unidentified Persons SectionPolice & jail
FBI San Francisco Field Office posters for wanted fugitives, kidnapped and missing persons, cyber suspects and cases where agents ask the public for information; tips can be sent through tips.fbi.gov.
Open official site FBI San Francisco Wanted and Missing PersonsPolice & jail
California Department of Justice listing of registered sex offenders that state law allows it to disclose; some registrants are left out, and registrants who use the search face a fine or jail.
Open official site California Megan's Law WebsiteFederal
Federal census statistics for Antioch city, California: July 2025 estimate 118,958, 2020 Census count 115,291, and data on veterans, foreign born residents, internet use, education, health insurance and businesses.
Open official site U.S. Census Bureau QuickFactsCity records
Antioch's city government site, with council and planning commission agendas and minutes, police, water services and the water payment portal, building permits, recreation, animal services and the municipal code.
Open official site City of AntiochCity records
Antioch City Clerk, the office that keeps county filings and public records, with the copies and searches it publishes.
Open official site Antioch City ClerkEverything else, organized
13 more Antioch sources not listed above.
Local record guide
Local profile
Antioch, a place of 115,291 people, is in Contra Costa County, whose county seat is Martinez. Court and property records sit with Contra Costa County, and birth and death certificates come from the State of California. Antioch's own offices are in the cards above, and our Contra Costa County page lists each county office.
Abandoned mine records
Where the workings are, and the office that holds the mine maps.
From the two federal mine files
The USGS mineral file records 20 named mine sites inside the city or town limits, 15 of them worked out or abandoned; the USGS topographic mine features add 8 features mapped inside the city or town limits, 2 of them shafts, adits or tunnels, digitised from the old survey sheets. The minerals the records name are construction sand and gravel; Stone; Silica.
A point in either file is a location, not a property line: the sheet shows the opening on the surface, not the rooms under it. The record that shows what runs under a parcel is the mine map. The OSMRE National Mine Map Repository holds scanned underground mine maps and answers requests for a named mine or an area.
California abandoned mine maps ranks every county and town in the state by the workings recorded inside it, names the office that holds the mine maps, and says what to do if the ground moves.
Please read: Everything here can be wrong. This is information, not a guarantee: the two federal files can be wrong, incomplete or out of date, the boundaries and the geocoder can be wrong, a point is a location and not a property line, and nothing on this page says that a mine is or is not under any particular property. Do not buy, sell, move, or make any decision about a home or about your safety on this alone. Ask the state mine map office named here for the maps, and have a qualified engineer look at the ground.
Straight answers
Open only the answer you need.
Voter registration in California is run by the California Secretary of State and local election officials. Its site lists the registration deadline, online voter registration, polling places and the local election office for Antioch.
Deeds for property in Antioch are recorded by the Contra Costa County Recorder, and the county office that assesses property keeps the tax values. Our Contra Costa County page lists the county offices.
Certified birth and death certificates for events in California come from the state vital records office, California Department of Public Health Vital Records. Its site lists who may order a copy, the fee and how to order.
Same county
Use the city page when a record was created by a municipal police department or city office; use the county page for courts, deeds, vital records and jail custody.