California counties
Every county in California, with the ZIP codes recorded in each. Pick one to see its full ZIP code list.
- counties
- 58
- ZIP codes
- 2,593
All California counties
| County | ZIP codes | Largest city |
|---|---|---|
| Alameda County | 69 | Oakland |
| Alpine County | 2 | Kirkwood |
| Amador County | 13 | Amador City |
| Butte County | 24 | Chico |
| Calaveras County | 20 | Altaville |
| Colusa County | 7 | Arbuckle |
| Contra Costa County | 52 | Concord |
| Del Norte County | 6 | Crescent City |
| El Dorado County | 30 | South Lake Tahoe |
| Fresno County | 98 | Fresno |
| Glenn County | 7 | Artois |
| Humboldt County | 38 | Eureka |
| Imperial County | 18 | Calexico |
| Inyo County | 12 | Bishop |
| Kern County | 67 | Bakersfield |
| Kings County | 9 | Hanford |
| Lake County | 15 | Clearlake |
| Lassen County | 15 | Susanville |
| Los Angeles County | 508 | Los Angeles |
| Madera County | 12 | Madera |
| Marin County | 41 | Novato |
| Mariposa County | 8 | Catheys Valley |
| Mendocino County | 28 | Albion |
| Merced County | 23 | Merced |
| Modoc County | 10 | Adin |
| Mono County | 7 | Benton |
| Monterey County | 35 | Salinas |
| Napa County | 12 | Napa |
| Nevada County | 16 | Truckee |
| Orange County | 146 | Anaheim |
| Placer County | 29 | Auburn |
| Plumas County | 16 | Beckwourth |
| Riverside County | 99 | Riverside |
| Sacramento County | 132 | Sacramento |
| San Benito County | 5 | Hollister |
| San Bernardino County | 116 | San Bernardino |
| San Diego County | 182 | San Diego |
| San Francisco County | 50 | San Francisco |
| San Joaquin County | 44 | Stockton |
| San Luis Obispo County | 35 | San Luis Obispo |
| San Mateo County | 38 | Redwood City |
| Santa Barbara County | 41 | Santa Barbara |
| Santa Clara County | 109 | San Jose |
| Santa Cruz County | 21 | Santa Cruz |
| Shasta County | 33 | Redding |
| Sierra County | 7 | Alleghany |
| Siskiyou County | 22 | Callahan |
| Solano County | 16 | Vallejo |
| Sonoma County | 50 | Santa Rosa |
| Stanislaus County | 28 | Modesto |
| Sutter County | 10 | Yuba City |
| Tehama County | 13 | Corning |
| Trinity County | 12 | Big Bar |
| Tulare County | 42 | Visalia |
| Tuolumne County | 15 | Big Oak Flat |
| Ventura County | 47 | Ventura |
| Yolo County | 21 | West Sacramento |
| Yuba County | 12 | Beale Afb |
Scope every county-equivalent recorded in California. Source Census 2024 county Gazetteer (2024 Gazetteer) and GeoNames US postal codes (2026-07 postal dump). Updated . Names and boundaries follow the Census Bureau's current county-equivalent set, not the CA postal source's older names.