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Whether you're just starting to create your family tree, or you're a dedicated family researcher, this guide will point you to helpful resources so you can learn more about who you are and where you came from.
Last Updated: Mar 28, 2014 URL: Print Guide RSS Updates

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Local Genealogical Societies

  • Contra Costa County Genealogical Society
    Founded in May, 1975. From that small beginning we have grown into an organization of over 100 members and roughly 100 exchange societies and organizations.
  • San Ramon Valley Genealogical Society
  • Mt. Diablo Genealogical Society
    P.O. Box 2062
    Walnut Creek, CA 94595
    The Mt. Diablo Genealogical Society can be contacted by email
  • East Bay Genealogical Society
    Established in 1978 for the purpose of promoting interest in genealogy, biography, and related history.
  • California Societies
    Search for other California genealogy & historical societies
  • Sutro Library Location & Directions
    The Sutro Library has one of the largest genealogical collections west of Salt Lake City with extensive resources for states other than California and basic resources for California. The California Section of the California State Library, Sacramento, has more materials for California history and genealogy.

    Special Collections: Over 7,000 family histories. 35,000 local histories and vital records titles. All U.S. census microfilms from 1790 to 1930, except 1890.
  • Sutro Library Hours
  • California Genealogical Society and Library
    The Society offers research services, online one-of-a-kind genealogical indexes and databases, and a research library.The society's library houses over 30,000 reference materials from California, the United States, and from around the World. Non-members pay $5. or free on the first Saturday. Volunteers are available to help in your search. Visit their website to find classes
  • National Archives - Pacific Region
    NARA's Pacific Region, San Francisco, located in our San Bruno facility, has extensive microfilm holdings of value for genealogy research.

San Francisco City Directories (Online - Free)


Great Registers

Great Registers list registered voters and may include information such as birth dates, naturalization dates, address, and occupations.

Index to the Great Register, Contra Costa County, 1902 -  (Provided  by the Contra Costa County Library Heritage  Collection Volunteers)

Great Registers of Contra Costa County, 1867-1890   (microfilm)    
Call Number: Vault R 929.37946 Contra Costa (For microfilm, check with the Pleasant Hill Library Information Desk.)

California Great Registers: The Heritage Collection includes the "California 1890 Great Register of Voters Index" a 3-volume set compiled by the California State Genealogical Alliance. The register provides names, birthplace, age, residence, county, registration date, and naturalization information for those registered to vote in 1890. Look for it in the California section of the Heritage Collection.   (J. Carylye Parker has written an article on California's Great Registers that gives a general description of the Great Registers of California.)


Heritage Collection - Pleasant Hill Library

The Heritage Collection is made up of genealogical resources donated to the Pleasant Hill Library’s Genealogy Section. The collection comprises over 3000 items with emphasis on American genealogy. All materials are cataloged. 

Materials include:

  • General genealogical reference (e.g. “how to” source books, atlases, gazetteers)
  • State genealgocial reference (e.g. vital records directories, census)
  • Family histories
  • War and pension lists for participants of wars
  • Immigration and migration (e.g. passenger lists, etc.)
  • Patriotic and heritage organizations (e.g. Mayflower descendants)
  • Church records, cemeteries, mortuaries
  • Records of wills and abstracts of records of wills, marriages, etc.
  • Ethnic and cultural genealogy (e.g. England, Scotland, Ireland, Europe, Germany, Native American, African American, Canada, Huguenot, Heraldry)
  • California 1890 Great Register of Voters Index- 3 volume set compiled by the California State Genealogical Alliance. Names, birthplace, age, residence, county, registration date, and naturalization information for those registered to vote in 1890.
  • Periodicals

Click here to view more than 200 titles from the collection

Contra Costa County

  • Recorded Documents Search
    This is a database of public records for Contra Costa County. The database allows you to search for marriage records, fictitious business documents, and recorded documents. It also provides a place to request birth and death certificates from the county.
  • Genealogy (GenWeb)
    The Contra Costa County Genealogy is part of the U.S. GenWeb Project and the California GenWeb Project. It Offers information Exchange, Lists & Links & Research Sites related to Contra Costa County.
  • Family Search
    Guide to Contra Costa County California genealogy. Birth records, marriage records, death records, census records, family history, and military records.

Church of Jesus Christ of Latter-day Saints (LDS) Family History Centers

Family History Centers provide access to microfilms and microfiche to help patrons identify their ancestors.

2350 Jeffery Way
Brentwood, CA
3700 Concord Blvd
Concord, CA
2949 Stone Valley Rd
Alamo, CA
Oakland Regional Family History Center
4766 Lincoln AvenueOakland, CA 94602
(510) 531-3905

Family Search - non-profit service sponsored by The Church of Jesus Christ of Latter-day Saints..


    High School Yearbooks

    A listing of yearbooks, available in Contra Costa County community libraries.


    About Research Assistance

    Due to budget, resource and staffing reductions, Library staff is no longer able to perform extensive genealogy research on behalf of patrons and non-Contra Costa County residents.

    To help you with your research, please refer to the local and online resources listed here or call the Pleasant Hill Library to arrange for assistance from Contra Costa County Genealogical Society volunteers at the times listed below.


    Heritage Collection - Research Assistance

    Volunteers from the Contra Costa County Genealogical Society are available to help interested persons use the Heritage Collection (Pleasant Hill Library). Regularly scheduled hours are:

    Tuesday: 1:00 PM -3:00 PM

    Wednesday: 11:00 AM -1:00 PM

    Thursday: 11:00 AM -1:00 PM

    Friday: 10:00 AM -12:00 PM

    Tuesday: 4:00 PM -6:00 PM

    Wednesday: 1:00 PM -3:00 PM

    Thursday: 11:00 AM -1:00 PM

    Friday: 1:00 PM -3:00 PM

    Tuesday: 6:00 PM -8:00 PM

    Wednesday: 11:00 AM -1:00 PM

    Thursday: 11:00 AM -1:00 PM

    Friday: 10:00 AM -12:00 PM

    Saturday: 11:00 AM -1:00 PM

    Tuesday: 1:00 PM -3:00 PM

    Wednesday: 1:00 PM -3:00 PM

    Thursday: 11:00 AM -1:00 PM

    Friday: 10:00 AM -12:00 PM

    Saturday: 11:00 AM -1:00 PM


    No appointment is necessary, but please call ahead to check with the Information Desk (925-646-6434) to verify that a docent is available. The Library is closed Sundays and Mondays.


    Bay Area Libraries with Inter-Library Loan Service

    The Contra Costa County Library no longer offers Inter-Library Loan Service.

    Patrons may request items they wish to borrow directly from libraries that participate in the Link+  program. 

    The following area libraries offer Inter-Library Loan Service:

    Livermore Public Library
    Oakland Public Library
    Richmond Public Library
    San Francisco Public Library

    Vital Records


    • Daughters of the American Revolution
      Do you have a Revolutionary Patriot in your family tree? Membership in the Daughters of the American Revolution (DAR) honors and preserves the legacy of your Patriot ancestor.
    • Daughters of the American Revolution (Anne Louckes Chapter)
    • Society of California Pioneers  
      Established in 1850, The Society of California Pioneers is a not-for-profit museum, library, and cultural organization dedicated to advancing the knowledge and appreciation of early California history for the benefit of present and future audiences of all
    • National Genealogical Society
      The National Genealogical Society is an indispensable resource for genealogists and family historians seeking excellence in educational offerings, publications and materials, research and research guidance, and opportunities to interact with others.
    • Los Californianos  
      Los Californianos was created for the purpose of preserving the heritage of the early Hispanic Californians in Alta California
    • San Franciso Bay Area Jewish Genealogical Society
      The San Francisco Bay Area Jewish Genealogical Society (SFBAJGS) is a non-profit organization dedicated to the development, preservation and distribution of Jewish genealogical knowledge and material, and the sharing of techniques and tools with others who may be searching their Jewish Roots.

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