Contra Costa County Library

Search for Contra Costa County CA county libraries. A county library search provides information on hours, locations and phone numbers, library services, library events, library programs, books, magazines, movies, music, ebooks, reference services, government documents, vital records, story times, book clubs, library classes, apply for a library card, check out books, find local library branches, and public index information.


Contra Costa County Libraries collects and stores documents and multimedia records which they make available to the public. Libraries operate at the Contra Costa County local level, or they may be part of an university, a private organization, or a government agency. Contra Costa County libraries contain books, magazines, movies, music, and online and digital documents, including ebooks. They may also provide a searchable database to locate government documents such as Contra Costa County vital records, government agency reports, and records on individuals and businesses. Libraries also offer events and services, including story times, book clubs, and classes, as well as reference services. Some library services may be restricted to residents of Contra Costa County California, who may be required to apply for a library card. County libraries provide information about their records and services online.

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

Pleasant Hill Library - Contra Costa County Library Pleasant Hill CA 1750 Oak Park Boulevard 94523 925-646-6434