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California counties by population

Number of counties: 58
Population: 39,455,353
Largest county: Los Angeles County
Table of counties in California sorted by population from largest to smallest.
CountyPopulation
Los Angeles County10,019,635
San Diego County3,296,317
Orange County3,182,923
Riverside County2,409,331
San Bernardino County2,171,071
Santa Clara County1,932,022
Alameda County1,673,133
Sacramento County1,571,767
Contra Costa County1,161,643
Fresno County1,003,150
Kern County905,644
San Francisco County865,933
Ventura County845,255
San Joaquin County771,406
San Mateo County762,488
Stanislaus County550,842
Sonoma County492,498
Tulare County470,999
Solano County451,432
Santa Barbara County447,651
Monterey County438,953
Placer County400,330
San Luis Obispo County282,771
Merced County279,150
Santa Cruz County272,138
Marin County262,387
Butte County217,884
Yolo County216,703
El Dorado County190,568
Shasta County181,935
Imperial County180,051
Madera County156,304
Kings County151,887
Napa County138,795
Humboldt County137,014
Nevada County102,090
Sutter County99,080
Mendocino County91,534
Yuba County80,404
Lake County67,749
Tehama County65,345
San Benito County63,329
Tuolumne County55,243
Calaveras County45,349
Siskiyou County44,151
Amador County40,095
Lassen County32,949
Glenn County28,675
Del Norte County27,655
Colusa County21,780
Plumas County19,631
Inyo County18,804
Mariposa County17,225
Trinity County15,818
Mono County13,291
Modoc County8,723
Sierra County3,079
Alpine County1,344

What is the largest county in California?

Los Angeles County is the largest county in California with a population of 10,019,635.

TOP-5 counties by population in California:
  • Los Angeles County
  • San Diego County
  • Orange County
  • Riverside County
  • San Bernardino County