California — All 58 Counties

California has 58 counties with 1,599 communities and a combined population of 37,420,432.

CountyTownsPopulation
Los Angeles County1429,769,342
Orange County453,138,405
San Diego County573,130,508
Riverside County742,367,259
San Bernardino County522,070,141
Santa Clara County221,786,333
Alameda County201,647,320
Sacramento County351,569,083
Contra Costa County531,234,283
Fresno County45897,705
Kern County88887,840
San Francisco County1836,321
Ventura County24800,631
San Mateo County33727,512
San Joaquin County28712,955
Stanislaus County33500,177
Solano County11437,505
Santa Barbara County28429,711
Tulare County69412,152
Sonoma County38402,525
Monterey County29364,465
Placer County21351,670
Merced County24247,283
San Luis Obispo County30241,374
Marin County30236,246
Santa Cruz County30233,312
Yolo County17208,195
Butte County30185,521
Imperial County18162,728
Shasta County32151,403
Kings County11136,599
El Dorado County15135,634
Madera County16132,176
Napa County11119,112
Humboldt County40113,717
Sutter County873,806
Yuba County1172,343
Nevada County1453,578
Lake County1553,276
San Benito County449,139
Mendocino County2345,361
Tuolumne County1935,081
Tehama County1833,344
Amador County1929,990
Calaveras County1629,108
Siskiyou County2125,299
Lassen County1622,219
Colusa County918,131
Glenn County517,070
Plumas County4515,678
Inyo County2015,436
Trinity County1413,291
Mono County1712,480
Del Norte County712,323
Mariposa County177,591
Modoc County135,193
Sierra County112,378
Alpine County51,174