The U.S. currently has 42 statistical areas that have been delineated by the federal Office of Management and Budget (OMB).
On July 21, 2023, the OMB delineated seven combined statistical areas, 25 metropolitan statistical areas, and ten micropolitan statistical areas in California. As of 2023, the largest of these in the state is the Los Angeles-Long Beach, CA CSA, encompassing greater Los Angeles.
+The 42 United States statistical areas and 58 counties of the State of CaliforniaCombined statistical area2025 population (est.)Core-based statistical area2025 population (est.)County2025 population (est.)Metropolitan division2025 population (est.)Los Angeles–Long Beach, CA CSA18,444,299Los Angeles–Long Beach–Anaheim, CA MSA12,844,441Los Angeles County, California9,694,934Los Angeles-Long Beach-Glendale, CA MD9,694,934Orange County, California3,149,507Anaheim-Santa Ana-Irvine, CA MD3,149,507Riverside–San Bernardino–Ontario, CA MSA4,769,007Riverside County, California2,544,916noneSan Bernardino County, California2,224,091Oxnard-Thousand Oaks-Ventura, CA MSA829,590Ventura County, California829,590San Jose-San Francisco-Oakland, CA CSA9,140,485San Francisco–Oakland–Fremont, CA MSA4,630,041Alameda County, California1,636,630Oakland-Fremont-Berkeley, CA MD2,806,700Contra Costa County, California1,170,070San Francisco County, California826,079San Francisco-San Mateo-Redwood City, CA MD1,569,647San Mateo County, California743,568Marin County, California253,694San Rafael, CA MD253,694San Jose-Sunnyvale-Santa Clara, CA MSA1,984,473Santa Clara County, California1,914,391noneSan Benito County, California70,082Stockton, CA MSA823,815San Joaquin County, California823,815Modesto, CA MSA557,719Stanislaus County, California557,719Vallejo, CA MSA449,218Solano County, California449,218Merced, CA MSA297,260Merced County, California297,260Santa Cruz-Watsonville, CA MSA258,852Santa Cruz County, California258,852Napa, CA MSA132,949Napa County, California132,949noneSan Diego-Chula Vista-Carlsbad, CA MSA3,282,248San Diego County, California3,282,248Sacramento-Roseville, CA CSA2,766,663Sacramento-Roseville-Folsom, CA MSA2,477,274Sacramento County, California1,618,460Placer County, California442,081Yolo County, California224,410El Dorado County, California192,323Yuba City, CA MSA187,478Sutter County, California98,787Yuba County, California88,691Truckee-Grass Valley, CA μSA101,911Nevada County, California101,911Fresno-Hanford–Corcoran, CA CSA1,357,710Fresno, CA MSA1,203,383Fresno County, California1,035,456Madera County, California167,927Hanford-Corcoran, CA MSA154,327Kings County, California154,327noneBakersfield-Delano, CA MSA927,068Kern County, California927,068Santa Rosa-Petaluma, CA MSA486,444Sonoma County, California486,444Visalia, CA MSA485,146Tulare County, California485,146Santa Maria-Santa Barbara, CA MSA442,065Santa Barbara County, California442,065Salinas, CA MSA433,729Monterey County, California433,729San Luis Obispo-Paso Robles, CA MSA282,367San Luis Obispo County, California282,367Redding-Red Bluff, CA CSA246,313Redding, CA MSA181,648Shasta County, California181,648Red Bluff, CA μSA64,665Tehama County, California64,665noneChico, CA MSA209,211Butte County, California209,211El Centro, CA MSA181,411Imperial County, California181,411Eureka-Arcata, CA μSA131,647Humboldt County, California131,647Ukiah, CA μSA88,122Mendocino County, California88,122Clearlake, CA μSA67,772Lake County, California67,772Sonora, CA μSA53,160Tuolumne County, California53,160Susanville, CA μSA28,117Lassen County, California28,117Brookings-Crescent City, OR-CA CSA49,03126,410()Crescent City, CA μSA26,410Del Norte County, California26,410Brookings, OR μSA23,296Curry County, Oregon22,364noneBishop, CA μSA18,158Inyo County, California18,158Reno-Carson City-Gardnerville Ranchos, NV-CA CSA714,3101,043(CA)Reno, NV MSA564,782Washoe County, Nevada498,022Lyon County, Nevada62,583Storey County, Nevada4,177Carson City, NV MSA58,036Carson City, Nevada58,036Gardnerville Ranchos, NV-CA μSA50,6861,141 (CA)Douglas County, Nevada49,545Alpine County, California1,043Fallon, NV μSA25,803Churchill County, Nevada25,803noneCalaveras County, California46,605Siskiyou County, California42,013Amador County, California41,876Glenn County, California28,141Colusa County, California21,836Plumas County, California18,583Mariposa County, California16,918Trinity County, California15,720Mono County, California12,505Modoc County, California8,426Sierra County, California3,098State of California39,347,890
+The 35 core-based statistical areas of the State of California2025 rankCore-based statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusLos Angeles-Long Beach-Anaheim, CA MSARiverside-San Bernardino-Ontario, CA MSASan Francisco-Oakland-Fremont, CA MSASan Diego-Chula Vista-Carlsbad, CA MSASacramento-Roseville-Folsom, CA MSASan Jose-Sunnyvale-Santa Clara, CA MSAFresno, CA MSABakersfield-Delano, CA MSAOxnard-Thousand Oaks-Ventura, CA MSAStockton, CA MSAModesto, CA MSASanta Rosa-Petaluma, CA MSAVisalia, CA MSAVallejo, CA MSASanta Maria-Santa Barbara, CA MSASalinas, CA MSAMerced, CA MSASan Luis Obispo-Paso Robles, CA MSASanta Cruz-Watsonville, CA MSAChico, CA MSAYuba City, CA MSARedding, CA MSAEl Centro, CA MSAHanford-Corcoran, CA MSAEureka-Arcata, CA μSANapa, CA MSATruckee-Grass Valley, CA μSAUkiah, CA μSAClearlake, CA μSARed Bluff, CA μSASonora, CA μSASusanville, CA μSACrescent City, CA μSABishop, CA μSAGardnerville Ranchos, NV-CA μSA (CA)Gardnerville Ranchos, NV-CA μSA
+The seven combined statistical areas of the State of California2025 rankCombined statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusLos Angeles-Long Beach, CA CSASan Jose-San Francisco-Oakland, CA CSASacramento-Roseville, CA CSAFresno-Hanford-Corcoran, CA CSARedding-Red Bluff, CA CSABrookings-Crescent City, OR-CA CSA (CA)Reno-Carson City-Gardnerville Ranchos, NV-CA CSA (CA)Brookings-Crescent City, OR-CA CSAReno-Carson City-Gardnerville Ranchos, NV-CA CSA
See also
Geography of California Demographics of California
Notes
References
External links
Office of Management and Budget United States Census Bureau