Contra Costa County Ancestry Search

Find Contra Costa County CA cemeteries, clerks, courts, historical societies, libraries, marriage license offices and town and city halls for free public records.


Contra Costa County Cemeteries may provide you with access to free public records related to funerals, burials, graveyards, gravesites, tombstone and headstone locations. Cemetery records provide Contra Costa County vital records useful for discovering family history.

Alamo Cemetery Danville CA 130 El Portal 94526 925-284-1353

Alamo-Lafayette Cemetery District Lafayette CA 3285 Mount Diablo Boulevard 94549 925-284-1353

Alhambra Cemetery Martinez CA Carquinez Scenic Drive 94553

Antioch Catholic Cemeteries Diocese of Oakland Antioch CA 2200 East 18th Street 94509 925-757-0658

Antioch Holy Cross Cemetery Antioch CA 2200 East 18th Street 94509 925-757-0658

Brentwood Union Cemetery Brentwood CA 11545 Brentwood Boulevard 94513 925-634-4748

Byron Brentwood Cemetery Brentwood CA 11545 Brentwood Boulevard 94513 925-634-4748

California Cemetery Brokers Pinole CA 2646 Appian Way 94564 510-222-4162

Concord Memory Gardens Cemetery Concord CA 2011 Arnold Industrial Way 94520 925-685-3464

El Sobrante Rolling Hills Memorial Park Cemetery El Sobrante CA 4100 Hilltop Drive 94803 510-223-6161

Lafayette Gan Shalom Cemetery Lafayette CA 3415 Mount Diablo Boulevard 94549 925-228-3636

Lafayette Queen of Heaven Cemetery Lafayette CA 1965 Reliez Valley Road 94549 925-932-0900

Oak View Memorial Park Cemetery Antioch CA 2500 East 18th Street 94509 925-757-4500


Contra Costa County Clerks may provide you with access to free public records related to marriage licenses, divorce filings, criminal, jail and arrest records. Contra Costa County genealogy records such as marriage licenses and certificates are useful for California family research.

Antioch City Clerk Antioch CA 200 H Street 94509 925-779-7007

Brentwood Clerk Brentwood CA 708 3rd Street 94513 925-516-5440

Contra Costa Clerk Richmond CA 100 South 37th Street 94804 510-374-3241

Contra Costa County Clerk Martinez CA 555 Escobar Street 94553 925-335-7800

Hercules City Clerk Hercules CA 111 Civic Drive 94547 510-799-8215

Oakley City Clerk Oakley CA 3231 Main Street 94561 925-625-7000


Contra Costa County Courts may provide you with access to free public records related to legal proceedings, cases, filings, documents, and appeals. Contra Costa County court records provide public records useful to family researchers.

Concord Superior Court Concord CA 2970 Willow Pass Road 94519 925-646-5404

Martinez Juvenile Court Martinez CA 202 Glacier Drive 94553 925-957-2700

Martinez Superior Court Martinez CA 725 Court Street 94553

Martinez Traffic Court Martinez CA 1020 Ward Street 94553


Contra Costa County Historical Societies may provide you with access to free public records related to local history and culture. Contra Costa County vital records provided by Historical Societies are important for ancestry research.

Antioch Historical Society Antioch CA 1500 West 4th Street 94509 925-757-1326

Clayton California Historical Society Clayton CA 6101 Main Street 94517 925-672-0240

Concord California Historical Society Concord CA 1601 Sutter Street 94520 925-827-3380

Contra Costa County Historical Society Martinez CA 610 Main Street 94553 925-229-1042

East Contra Costa Historical Society Brentwood CA Sellers Avenue 94513 925-634-8651

Lafayette Historical Society Lafayette CA 3491 Mount Diablo Boulevard 94549 925-283-1848

Martinez Historical Society Martinez CA 1005 Escobar Street 94553 925-228-8160


Contra Costa County Libraries may provide you with access to free public records databases with information related to vital, genealogy, historical, and property records. These Contra Costa County public records are useful for genealogy research.

Antioch Library Antioch CA 501 West 18th Street 94509 925-757-9224

Clayton Library Clayton CA 6125 Clayton Road 94517 925-673-0659

Concord Library Concord CA 2900 Salvio Street 94519 925-646-5455

Contra Costa Campus Library Concord CA 4700 Ygnacio Valley Road 94521 925-602-6725

Contra Costa County Law Library Richmond CA 100 South 37th Street 94804 510-374-3019

Contra Costa County Public Law Library Martinez CA 1020 Ward Street 94553 925-646-2783

Crockett Library - Contra Costa County Library Crockett CA 991 Loring Avenue 94525 510-787-2345

Dougherty Station Library San Ramon CA 17017 Bollinger Canyon Road 94582 925-973-3380

El Sobrante Library El Sobrante CA 4191 Appian Way 94803 510-374-3991

Hercules Public Library Hercules CA 109 Civic Drive 94547 510-245-2420

Lafayette Library - Contra Costa County Library Lafayette CA 3491 Mount Diablo Boulevard 94549 925-385-2280


Contra Costa County Marriage License Offices may provide you with free public records related to marriage licenses, wedding licenses, certificates and proof of marriage. Vital records from Contra Costa County Marriage License Offices provide important data for family tree research.

Contra Costa County Marriage License Martinez CA 555 Escobar Street 94553 925-335-7900


Contra Costa County Town and City Halls may provide you with free public records related to vital records, birth certificates, death certificates, marriage licenses, as well as property ownership records. Public records provided by Contra Costa County Town and City Halls for family genealogy research.

Antioch City Hall Antioch CA 200 H Street 94509 925-779-7011

Clayton City Hall Clayton CA 6000 Heritage Trail 94517 925-673-7300

Concord City Hall Concord CA 1950 Parkside Drive 94519 925-671-3425

El Cerrito City Hall El Cerrito CA 10890 San Pablo Ave 94530 510-215-4300

Hercules City Hall Hercules CA 111 Civic Drive 94547 510-799-8200

Lafayette City Hall Lafayette CA 3675 Mount Diablo Boulevard 94549 925-284-1968

Martinez City Hall Martinez CA 525 Henrietta St 94553 925-372-3500

Oakley City Hall Oakley CA 3231 Main Street 94561 925-625-7017