California is the leading producer of wine in the United States making more than 90 percent of all US wines; it also consumes the most wine.
California has been divided into nine main wine grape growing regions. Bay Area, Central Coast, North Coast, Sacramento Valley, San Joaquin Valley, Shasta Cascade, Sierra Foothills, South Coast, and Southern Inland.
Bay Area Wine Region: The Bay Are includes Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, Sonoma.
Central Coast Wine Region: Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz.
North Coast: Del Norte, Humboldt, Lake , Mendocino
Sacramento Valley: Butte, Colusa, Glenn, Sacramento, Sutter, Yolo, Tehame
San Joaquin Valley: Fresno, Kern, Kings, Madera, Mariposa, Merced, San Joaquin, Stanislaus, Tulare.
Shasta/Cascade: The Lassen, Modoc, Shasta, Siskiyou, Trinity.
Sierra Foothills: Alpine, Amador, Calaveras, El Dorado, Nevada, Placer, Plumas, Sierra, Tuolumne, Yuba.
South Coast: Los Angeles, Orange, San Diego, Ventura.
Southern Inland: Imperial, Inyo, Mono, Riverside, San Bernardino.
There are 110 approved American Viticultural Areas located in California.
>> Go to a list of California's American Viticultural Areas (AVA)