REGION 1
District 1—Del Norte, Humboldt, Lake, Marin, Mendocino, Napa, Sonoma, Solano, Trinity
District 2—Alpine, Amador, Butte, Colusa, El Dorado, Glenn, Lassen, Modoc, Nevada, Placer, Plumas, Sacramento, Shasta, Sierra, Siskiyou, Sutter, Tehama, Yolo, Yuba
District 3—Alameda, Contra Costa

REGION 2
District 4—San Francisco, San Mateo, Santa Clara
District 5—Calaveras, Mariposa, Merced, San Joaquin, Stanislaus, Tuolomne
District 6—Monterey, San Benito, Santa Cruz

REGION 3
District 7—Fresno, Kings, Madera, Tulare
District 8—San Luis Obispo, Santa Barbara, Ventura
District 15—Kern, Inyo, Los Angeles, Mono

REGION 4
District 11—Riverside, San Bernardino
District 13—Los Angeles
District 14—Los Angeles

REGION 5
District 9—Los Angeles
District 10—Orange, Los Angeles
District 12—Imperial, San Diego