Counties in California Los Angeles County (Los Angeles) San Diego County (San Diego) Orange County (Santa Ana) Riverside County (Riverside) San Bernardino County (San Bernardino) Santa Clara County (San Jose) Alameda County (Oakland) Sacramento County (Sacramento) Contra Costa County (Martinez) Fresno County (Fresno) Kern County (Bakersfield) San Francisco County (San Francisco) Ventura County (Ventura) San Joaquin County (Stockton) San Mateo County (Redwood City) Stanislaus County (Modesto) Sonoma County (Santa Rosa) Tulare County (Visalia) Solano County (Fairfield) Santa Barbara County (Santa Barbara) Monterey County (Salinas) Placer County (Auburn) San Luis Obispo County (San Luis Obispo) Merced County (Merced) Santa Cruz County (Santa Cruz) Marin County (San Rafael) Yolo County (Woodland) Butte County (Oroville) El Dorado County (Placerville) Shasta County (Redding) Imperial County (El Centro) Madera County (Madera) Kings County (Hanford) Napa County (Napa) Humboldt County (Eureka) Nevada County (Nevada City) Sutter County (Yuba City) Mendocino County (Ukiah) Yuba County (Marysville) Lake County (Lakeport) Tehama County (Red Bluff) San Benito County (Hollister) Tuolumne County (Sonora) Calaveras County (San Andreas) Siskiyou County (Yreka) Amador County (Jackson) Lassen County (Susanville) Glenn County (Willows) Del Norte County (Crescent City) Colusa County (Colusa) Plumas County (Quincy) Inyo County (Independence) Mariposa County (Mariposa) Trinity County (Weaverville) Mono County (Bridgeport) Modoc County (Alturas) Sierra County (Downieville) Alpine County (Markleeville)