County directory
Browse all counties currently covered by CountyWiki.
Browse counties on the map
California58 counties
County directory Office guides available
Map for browsing; agency service areas may differ.
Map source
U.S. Census boundaries via U.S. Atlas · 2017 edition, simplified for display.
58 counties · California statewide directory
| County | State | Office guides |
|---|---|---|
| AlamedaOakland, Berkeley, Fremont, Dublin | California | 42 |
| Alpine | California | 31 |
| Amador | California | 30 |
| Butte | California | 32 |
| Calaveras | California | 31 |
| Colusa | California | 30 |
| Contra CostaMartinez, Concord, Richmond, Walnut Creek | California | 33 |
| Del Norte | California | 30 |
| El Dorado | California | 32 |
| Fresno | California | 35 |
| Glenn | California | 30 |
| Humboldt | California | 31 |
| Imperial | California | 31 |
| Inyo | California | 32 |
| Kern | California | 34 |
| Kings | California | 31 |
| Lake | California | 33 |
| Lassen | California | 31 |
| Los Angeles | California | 39 |
| Madera | California | 31 |
| MarinSan Rafael, Novato, Mill Valley | California | 33 |
| Mariposa | California | 32 |
| Mendocino | California | 31 |
| Merced | California | 32 |
| Modoc | California | 31 |
| Mono | California | 30 |
| Monterey | California | 31 |
| NapaNapa, Calistoga, St. Helena | California | 32 |
| Nevada | California | 31 |
| Orange | California | 39 |
| Placer | California | 31 |
| Plumas | California | 31 |
| Riverside | California | 33 |
| Sacramento | California | 36 |
| San Benito | California | 31 |
| San Bernardino | California | 32 |
| San Diego | California | 37 |
| San FranciscoSan Francisco | California | 34 |
| San Joaquin | California | 32 |
| San Luis Obispo | California | 31 |
| San MateoRedwood City, San Mateo, Daly City | California | 31 |
| Santa Barbara | California | 31 |
| Santa ClaraSan Jose, Sunnyvale, Palo Alto, Santa Clara | California | 35 |
| Santa Cruz | California | 31 |
| Shasta | California | 33 |
| Sierra | California | 30 |
| Siskiyou | California | 30 |
| SolanoFairfield, Vallejo, Vacaville | California | 32 |
| SonomaSanta Rosa, Petaluma, Sonoma | California | 33 |
| Stanislaus | California | 30 |
| Sutter | California | 30 |
| Tehama | California | 32 |
| Trinity | California | 32 |
| Tulare | California | 30 |
| Tuolumne | California | 32 |
| Ventura | California | 30 |
| Yolo | California | 31 |
| Yuba | California | 31 |