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Membership with the Contra Costa County Historical Society puts you in a community of engaged citizens that believe in our mission of preserving and protecting the records and heritage of Contra Costa County.

Our members are actively involved with documenting the County’s dynamic history, researching family heritage, maintaining access to the vital records and historical documents of this extremely diverse county. Your membership ensures a seat at the table with our records, our researchers, and even provides for a 10% discount on all book sales.


"Lorem ipsum dolor sit amet, consectetur adipiscing elit."

- Federal D. Glover, Contra Costa County Supervisor

Membership Levels

Benefits include:

  • Society's quarterly newsletter, The Bulletin
  • Free copying and scanning services* plus reduced rates for research at the History Center
  • 10% discount in the CCCHS Bookstore
  • Invitations to Members Only Events
  • Eligible to join CFCU (Chevron Federal Credit Union)
  • Reprint of c.1890 Contra Costa County Map

*some restrictions and limitations apply



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Support Us



Support Us



Support Us



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Support Us



Support Us

One-time donation

By making a one-time donation to the Contra Costa County Historical Society you are graciously supporting our mission of preserving, protecting, and providing public access to our County’s rich and diverse history.

Volunteer Opportunities

The Contra Costa County Historical Society is a volunteer-driven organization. All Our dedicated volunteers selflessly donate their time and talent to support our organization.

We are always looking for talented individuals with a wide range of skills to share their experiences, abilities, and education with us as we fulfill our mission to preserve and protect the history and culture of Contra Costa County.

We are actively seeking volunteers that can assist us with the following skills:

  • Database management
  • Research Specialist
  • Research Assistant
  • Archival Aide
  • Photographic Assistant
  • Data Entry Assistant
  • Membership Aide
  • Historical Preservation Aide
  • Administrative Assistant

If you are interested, please complete the Volunteer Application and forward it to the CCCHS.

A hand drawn archival map of Boss Ranch in Contra Costa County

Volunteers Janet, Kaori and Lisa at the Special Collections Room