District/County Cross-referenceYou can look up your legislators and districts by Zip Code at the California Legislative Counsel Web site. To return here: If a new browser window opens, simply close it; Otherwise, use your browser's "Back" button.The table below lists the California Senate Districts along with the counties with which they are associated. Names in italics denote counties that are wholly contained within the boundaries of the district.
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District Counties 1 Alpine, Amador, Butte, Calaveras, El Dorado, Lassen, Modoc, Mono, Nevada, Placer, Plumas, Sierra, Yuba 2 Del Norte, Humboldt, Lake, Mendocino, Napa, Solano, Sonoma 3 Marin, San Francisco, Sonoma 4 Butte, Colusa, Glenn, Sacramento, Shasta, Siskiyou, Solano, Sutter, Tehema, Trinity, Yolo 5 Sacramento, San Joaquin 6 Sacramento 7 Alameda, Contra Costa 8 San Francisco, San Mateo 9 Alameda, Contra Costa 10 Alameda, Santa Clara 11 San Mateo, Santa Clara 12 Fresno, Madera, Mariposa, Merced, San Joaquin, Stanislaus, Tuolumne 13 Santa Clara 14 Fresno, Kern, Tulare 15 Monterey, San Benito, Santa Clara, SANTA CRUZ 16 Fresno, Kern, Kings, Madera, Tulare 17 Inyo, Kern, Los Angeles, San Bernardino 18 San Luis Obispo, Santa Barbara, Ventura 19 Los Angeles, Ventura 20 Los Angeles 21 Los Angeles 22 Los Angeles 23 Los Angeles 24 Los Angeles 25 Los Angeles 26 Los Angeles 27 Los Angeles 28 Los Angeles 29 Los Angeles 30 Los Angeles 31 Riverside, San Bernardino 32 Los Angeles, San Bernardino 33 Orange 34 Orange 35 Orange 36 Riverside, San Diego 37 Imperial, Riverside, San Diego 38 Orange, San Diego 39 San Diego 40 San Diego