A quasi-exhaustive list of operational craft breweries in California. I'd like to keep the list current; contributions are certainly welcome. Cheers and amen!
- Alameda County
- Amador County
- Butte County
- Contra Costa County
- El Dorado County
- Fresno County
- Humboldt County
- Kern County
- Lake County
- Los Angeles County
- Madera County
- Marin County
- Mendocino County
- Merced County
- Napa County
- Nevada County
- Orange County
- Plumas County
- Riverside County
- Sacramento County
- San Bernardino County
- San Diego County
- San Francisco City and County
- San Joaquin County
- San Luis Obispo County
- San Mateo County
- Santa Barbara County
- Santa Clara County
- Santa Cruz County
- Siskiyou County
- Solano County
- Stanislaus County
- Ventura County
- Yolo County
- 21st Amendment Brewery in San Leandro
- Ale Industries in Oakland
- Altamont Beer Works in Livermore
- Buffalo Bill's Brewery in Hayward
- Cleophus Quealy Beer Company in San Leandro
- Diving Dog Brewhouse in Oakland
- Drake's Brewing Company in San Leandro
- Eight Bridges Brewing Company in Livermore
- Faction Brewing in Alameda
- Fieldwork Brewing Company in Berkeley
- Hoi Polloi Brewpub and Beat Lounge in Berkeley
- JP DasBrew in Fremont
- Linden Street Brewery in Oakland
- Pacific Coast Brewing Company in Oakland
- The Rare Barrel in Berkeley
- Triple Rock Brewery and Alehouse in Berkeley
- Trumer Brauerei in Berkeley
- Woods Bar & Brewery in Oakland
- Working Man Brewing Company in Livermore
- Feather Falls Casino Brewing Company in Oroville
- Feather River Brewing Company in Magalia
- Sierra Nevada Brewing Company in Chico
- E.J. Phair Brewing Company in Pittsburg
- Elevation 66 Brewing Company in El Cerrito
- Schubros Brewery in San Ramon
- Eel River Brewing Company in Fortuna
- Humboldt Brews in Arcata
- Lost Coast Brewery in Eureka
- Mad River Brewing Company in Blue Lake
- Redwood Curtain Brewing Company in Arcata
- Six Rivers Brewery in McKinleyville
- Kelsey Creek Brewing Company in Kelseyville
- Mount St. Helena Brewing Company in Middletown
- O'Meara Brothers Brewing Company in Lakeport
- Absolution Brewing Company in Torrance
- Alosta Brewing Co in Covina
- Angel City Brewery in Los Angeles
- Claremont Craft Ales in Claremont
- The Dudes' Brewing Company in Torrance
- Eagle Rock Brewery in Los Angeles
- El Segundo Brewing Company in El Segundo
- Golden Road Brewery in Los Angeles
- Gordon Biersch Brewing Company in Burbank
- Karl Strauss Brewing Company in Universal City Walk
- King Harbor Brewing Company in Redondo Beach
- Monkish Brewing Company in Torrance
- Ohana Brewing Company in Los Angeles
- Pacific Plate Brewing Company in Monrovia
- Progress Brewing in South El Monte
- Red Car Brewery in Torrance
- Sanctum Brewing Company in Pomona
- Smog City Brewing Company in Torrance
- Strand Brewing Company in Torrance
- Timeless Pints Brewing Company in Lakewood
- Three Weavers Brewing Company in Inglewood
- Anderson Valley Brewing Company in Boonville
- Mendocino Brewing Company in Ukiah
- North Coast Brewing Company in Fort Bragg
- FiftyFifty Brewing Company in Truckee
- Nevada Brewery in Nevada City
- Tahoe Mountain Brewing Company in Truckee
- Anaheim Brewery in Anaheim
- Barley Forge Brewing Company in Costa Mesa
- Beach City Brewery in Huntington Beach
- Bootlegger's Brewery in Fullerton
- Bottle Logic Brewing in Anaheim
- The Bruery in Placentia
- The Good Beer Company in Santa Ana
- Noble Ale Works in Anaheim
- Old Orange Brewing Company in Orange
- Riip Beer Company in Huntington Beach
- Tustin Brewing Company in Tustin
- Valiant Brewing Company in Orange
- Aftershock Brewing Company in Temecula
- Black Market Brewing Company in Temecula
- Inland Empire Brewing Company in Riverside
- Ironfire Brewing Company in Temecula
- Karl Strauss Brewing Company in Temecula
- Refuge Brewery in Temecula
- Wiens Brewing Company in Temecula
- Hangar 24 Craft Brewery in Redlands
- Oak Hills Brewing Company in Hesperia
- Ritual Brewing Co. in Redlands
- Acoustic Ales Brewing Experiment in San Diego
- AleSmith Brewing Company in San Diego
- Alpine Beer Company in Alpine
- Amplified Aleworks in San Diego
- Aztec Brewing Company in Vista
- Ballast Point Brewing Company in San Diego
- Barrel Harbor Brewing in Vista
- The Beer Company in San Diego
- Belching Beaver Brewery in Vista
- Breakwater Brewing Company in Oceanside
- ChuckAlek Independent Brewers in Ramona
- Coronado Brewing Company in San Diego
- Council Brewing Company in San Diego
- Culture Brewing Co. in Solana Beach
- Division 23 Brewing in San Diego
- Duck Foot Brewing Company in San Diego
- Fall Brewing in San Diego
- Gordon Biersch in San Diego
- Green Flash Brewing Company in San Diego
- Indian Joe Brewing Company in Vista
- Intergalactic Brewing Co. in San Diego
- Iron Fist Brewing Company in Vista
- Karl Strauss Brewing Company in 4S Ranch
- Karl Strauss Brewing Company in Carlsbad
- Karl Strauss Brewing Company in San Diego
- Kilowatt Brewing in San Diego
- Legacy Brewing Company in Oceanside
- Lost Abbey in San Marcos
- Mike Hess Brewing Co. in San Diego
- Mission Brewery in San Diego
- Modern Times Beer in San Diego
- Monkey Paw Brewing in San Diego
- Mother Earth Brew Co. in Vista
- New English Brewing Co. in San Diego
- Nickel Beer Company in Julian
- NOVO Brazil Brewing Company in Chula Vista
- Offbeat Brewing Company in Escondido
- On-The-Tracks Brewery in Carlsbad
- O'Sullivan Brother's Brewing in San Diego
- Pacific Beach Alehouse in San Diego
- Pizza Port in Carlsbad
- Pizza Port in San Diego
- Pizza Port in Solana Beach
- Port Brewing Company in San Marcos
- Reckless Brewing Company in San Diego
- Rip Current Brewing in San Diego
- Rip Current Brewing Company in San Marcos
- Rough Draft Brewing Company in San Diego
- Saint Archer Brewing in San Diego
- San Diego Brewing Company in San Diego
- Societe Brewing Company in San Diego
- Stone Brewing Co. in Escondido
- Stone Brewing Co. in San Diego
- Stumblefoot Brewing Company in San Marcos
- Thorn Street Brewery in San Diego
- Toolbox Brewing in Vista
- 21st Amendment Brewery
- Almanac Beer Company
- Anchor Brewing Company
- Beach Chalet Brewery & Restaurant
- Black Sands Brewery
- Cellarmaker Brewing Company
- Fort Point Beer Company
- Harmonic Brewing
- Speakeasy Ales and Lagers
- Sunset Reservoir Brewing Company
- Thirsty Bear Brewing Company
- Woods Cervecería
- Devil's Canyon Brewing Company in Belmont
- Half Moon Bay Brewing Company in Half Moon Bay
- Highway 1 Brewing in Pescadero
- Hop Dogma Brewing in El Granada
- Figueroa Mountain Brewing Company in Buellton
- Firestone Walker Brewing Company in Buellton
- Island Brewing Company in Carpinteria
- M. Special Brewing Company in Goleta
- Pure Order Brewing Company in Santa Barbara
- Telegraph Brewing Company in Santa Barbara
- Boulder Creek Brewery & Cafe in Boulder Creek
- Discretion Brewing in Soquel
- Santa Cruz Aleworks in Santa Cruz
- Santa Cruz Mountain Brewing in Santa Cruz
- Sante Adairius Rustic Ales in Capitola
- Seabright Brewery in Santa Cruz
- Uncommon Brewers in Santa Cruz
- Dunsmuir Brewery Works in Dunsmuir
- Etna Brewing Company in Etna
- Mt. Shasta Brewing Company in Weed
- Siskiyou Brew Works
- Anheuser-Busch InBev brewery in Fairfield
- Heretic Brewing Company in Fairfield
- Right Eye Brewery in Suisan
- Bear Republic Brewing Company in Healdsburg
- Carneros Brewing Company in Sonoma
- Fog Belt Brewing Company in Santa Rosa
- Lagunitas Brewing Company in Petaluma
- Moonlight Brewing Company in Santa Rosa
- Old Redwood Brewing Company in Windsor
- Petaluma Hills Brewing Company in Petaluma
- Russian River Brewing Company in Santa Rosa
- Sonoma Springs Brewing Company in Sonoma
- St. Florian's Brewery in Windsor
- Stumptown Brewery in Guerneville
- Third Street Aleworks in Santa Rosa