California Counties

Parent CountyCounty SeatContact Name
Alameda 1853 Contra Costa, Santa Clara Oakland Available
Alpine 1864 Eldorado, Amador, Calaveras Markleeville Available
Amador 1854 Calaveras Jackson Available
Butte 1850 Original County Oroville Available
Calaveras 1850 Original County San Andreas Available
Colusa 1850 Original County Colusa Available
Contra Costa 1850 Original County Martinez Available
Del Norte 1857 Klamath Crescent City Available
El Dorado 1850 Original County Placerville Available
Fresno 1856 Merced, Mariposa Fresno Available
Glenn 1891 Colusa Willows Available
Humboldt 1853 Trinity Eureka Available
Imperial 1907 San Diego El Centro Available
Inyo 1866 Tulare Independence Available
Kern 1866 Tulare, Los Angeles Bakersfield Trisha Bleau
Kings 1893 Tulare, Fresno Hanford Available
Klamath 1851 Trinity No Longer Exists Available
Lake 1861 Napa Lakeport Available
Lassen 1864 Plumas, Shasta Susanville Available
Los Angeles 1850 Original County Los Angeles Ray Ensing
Madera 1893 Mariposa, Fresno Madera Available
Marin 1850 Original County San Rafael Available
Mariposa 1850 Original County Mariposa Available
Mendocino 1850 Original County Ukiah Available
Merced 1855 Mariposa Merced Available
Modoc 1874 Siskiyou Alturas Judy Wallis White
Mono 1861 Calaveras, Fresno Bridgeport Available
Monterey 1850 Original County Salinas Available
Napa 1850 Original County Napa Available
Nevada 1851 Yuba Nevada City Available
Orange 1889 Los Angeles Santa Ana Steve Johnson & John DePoto
Placer 1851 Yuba, Sutter Auburn Available
Plumas 1854 Butte Quincy Available
Riverside 1893 San Diego, San Bernardino Riverside Steve Lech
Sacramento 1850 Original County Sacramento Jacque Rogers
San Benito 1874 Monterey Hollister Available
San Bernardino 1853 Los Angeles San Bernardino Steve Lech
San Diego 1850 Original County San Diego Available
San Francisco 1850 Original County San Francisco Available
San Joaquin 1850 Original County Stockton Available
San Luis Obispo 1850 Original County San Luis Obispo Available
San Mateo 1856 San Francisco Redwood City Available
Santa Barbara 1850 Original County Santa Barbara Fred Smoot
Santa Clara 1850 Original County San Jose Available
Santa Cruz 1850 Original County Santa Cruz Available
Shasta 1850 Original County Redding Available
Sierra 1852 Yuba Downieville Available
Siskiyou 1852 Shasta, Klamath, Oregon Yreka Steve & Laura Melton
Solano 1850 Original County Fairfield Available
Sonoma 1850 Original County Santa Rosa Debra McCann
Stanislaus 1854 Tuolumne Modesto Available
Sutter 1850 Original County Yuba City Available
Tehama 1856 Colusa, Butte, Shasta Red Bluff Available
Trinity 1850 Original County Weaverville Available
Tulare 1852 Mariposa Visalia Available
Tuolumne 1850 Original County Sonora Available
Ventura 1872 Santa Barbara Ventura Available
Yolo 1850 Original County Woodland Available
Yuba 1850 Original County Marysville Available

Additional county coordinators are welcome. If you would like to add a link to your independent California county history and genealogy web site, please contact the California state coordinator. To find out more about the American History and Genealogy Project, visit the AHGP home page.

Map of California Counties

Return to California AHGP home page

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