California counties have been divided into the following five regions:
Access county websites in the counties listed below the map.
Alameda Berkeley City Contra Costa Marin Monterey Napa San Benito San Francisco San Mateo Santa Clara Santa Cruz Solano Sonoma
Top
Imperial Kern Orange Riverside San Bernardino San Diego San Luis Obispo Santa Barbara Tri-City Ventura
Los Angeles
Alpine Amador Calaveras El Dorado Fresno Inyo Kings Madera Mariposa Merced Mono Placer Sacramento San Joaquin Stanislaus Sutter-Yuba Tulare Yolo
Superior
Butte Colusa Del Norte Humboldt Lake Lassen Mendocino Modoc Nevada Plumas Shasta Sierra Siskiyou Tehama Trinity Tuolumne
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