Central Coast Region
Monterey County, San Benito County, San Luis Obispo County, Santa Barbara County, Santa Cruz County, Ventura County
Central Valley Region
Fresno County, Kern County, Kings County, Madera County, Merced County, San Joaquin County, Stanislaus County, Tulare County
Lake Tahoe Region
El Dorado County, Nevada County, Placer County
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North Coast Region
Del Norte County, Humboldt County, Lake County, Mendocino County, Trinity County
Sacramento Valley Region
Butte County, Colusa County, Glenn County, Sacramento County, Sutter County, Tehama County, Yolo County, Yuba County
San Francisco Bay Region
Alameda County, Contra Costa County, Marin County, Napa County, San Francisco County, San Mateo County, Santa Clara County, Solano County, Sonoma County
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Shasta Cascade Region
Lassen County, Modoc County, Shasta County, Siskiyou County
Sierra Nevada Region
Alpine County, Amador County, Calaveras County, Inyo County, Mariposa County, Mono County, Plumas County, Sierra County, Tuolumne County
Southern California Region
Imperial County, Los Angeles County, Orange County, Riverside County, San Bernardino County, San Diego County
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Regions in California:
(with names of Districts/Counties in each region)