Ventura County was added from Santa Barbara County.
| 1 | Alameda | 2 | Alpine | 3 | Amador | 4 | Butte |
| 5 | Calaveras | 6 | Colusa | 7 | Contra Costa | 8 | Del Norte |
| 9 | El Dorado | 10 | Fresno | 12 | Humboldt | 14 | Inyo |
| 15 | Kern | 17 | Klamath | 18 | Lake | 19 | Lassen |
| 20 | Los Angeles | 22 | Marin | 23 | Mariposa | 24 | Mendocino |
| 25 | Merced | 27 | Mono | 28 | Monterey | 29 | Napa |
| 30 | Nevada | 32 | Placer | 33 | Plumas | 35 | Sacramento |
| 37 | San Bernardino | 38 | San Diego | 39 | San Francisco | 40 | San Joaquin |
| 41 | San Luis Obispo | 42 | San Mateo | 43 | Santa Barbara | 44 | Santa Clara |
| 45 | Santa Cruz | 46 | Shasta | 47 | Sierra | 48 | Siskiyou |
| 49 | Solano | 50 | Sonoma | 51 | Stanislaus | 52 | Sutter |
| 53 | Tehama | 54 | Trinity | 55 | Tulare | 56 | Tuolumne |
| 57 | Ventura | 58 | Yolo | 59 | Yuba |