Contra Costa County, California
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U. S. Federal Census
Years available: 1860 1870 1880 1890 1900 1910 1920 1930 1940
Web: Census Enumeration Districts, 1830-1890 and 1910-1950 (PDF) at Archives.gov [T1224]Web: Census Enumeration Districts, 1930-1940 at Archives.govWeb: Census Enumeration Maps, 1930 (PDF) at Archives.gov [M1930]Web: Census Enumeration Maps, 1900-1940 (PDF) at Archives.gov [A3378]
Submit Genealogical Societies
Submit Historical Societies
Subscription Databases ($) from Ancestry.com
Web: California Marriages, 1844-1850
Web: The History of Contra Costa County, California
Web: History of Contra Costa County
Web: History of Contra Costa County, California
Additional Resources (on other web sites)
Contra Costa Times
The county of Contra Costa was established in 1850, and the county seat is Martinez. For the most current listing of resources for this location, and from additional publishers, please visit the Contra Costa County page in the Live Roots catalog.
Locate online books from Google Books
Locate used books from ABEbooks.com
Locate auction items from eBay.com
Locate library books from WorldCat.org
Related Web Sites
Web: RootsWeb Resources for Contra Costa County Free!
Web: GenForum Queries for Contra Costa County Free!
Web: Cyndi's List: Contra Costa County Free!
Web: Linkpendium: Contra Costa County Free!
Web: FamilySearch Wiki: Contra Costa County, California Free!
If you know of a resource in Contra Costa County, please share the details with us.
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