California / Counties by Population
Below are the 58 California counties sorted by population from 1 to 58 . The population data are from the 2021 Population Estimates Program and 2020 American Community Survey. You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!
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| Rank | County | Population |
|---|---|---|
| 1 | Los Angeles County | 9,829,544 |
| 2 | San Diego County | 3,286,069 |
| 3 | Orange County | 3,167,809 |
| 4 | Riverside County | 2,458,395 |
| 5 | San Bernardino County | 2,194,710 |
| 6 | Santa Clara County | 1,885,508 |
| 7 | Alameda County | 1,648,556 |
| 8 | Sacramento County | 1,588,921 |
| 9 | Contra Costa County | 1,161,413 |
| 10 | Fresno County | 1,013,581 |
| 11 | Kern County | 917,673 |
| 12 | Ventura County | 839,784 |
| 13 | San Francisco County | 815,201 |
| 14 | San Joaquin County | 789,410 |
| 15 | San Mateo County | 737,888 |
| 16 | Stanislaus County | 552,999 |
| 17 | Sonoma County | 485,887 |
| 18 | Tulare County | 477,054 |
| 19 | Solano County | 451,716 |
| 20 | Santa Barbara County | 446,475 |
| 21 | Monterey County | 437,325 |
| 22 | Placer County | 412,300 |
| 23 | Merced County | 286,461 |
| 24 | San Luis Obispo County | 283,159 |
| 25 | Santa Cruz County | 267,792 |
| 26 | Marin County | 260,206 |
| 27 | Yolo County | 216,986 |
| 28 | Butte County | 208,309 |
| 29 | El Dorado County | 193,221 |
| 30 | Shasta County | 182,139 |
| 31 | Imperial County | 179,851 |
| 32 | Madera County | 159,410 |
| 33 | Kings County | 153,443 |
| 34 | Humboldt County | 136,310 |
| 35 | Napa County | 136,207 |
| 36 | Nevada County | 103,487 |
| 37 | Sutter County | 99,063 |
| 38 | Mendocino County | 91,305 |
| 39 | Yuba County | 83,421 |
| 40 | Lake County | 68,766 |
| 41 | San Benito County | 66,677 |
| 42 | Tehama County | 65,498 |
| 43 | Tuolumne County | 55,810 |
| 44 | Calaveras County | 46,221 |
| 45 | Siskiyou County | 44,118 |
| 46 | Amador County | 41,259 |
| 47 | Lassen County | 33,159 |
| 48 | Glenn County | 28,805 |
| 49 | Del Norte County | 28,100 |
| 50 | Colusa County | 21,917 |
| 51 | Plumas County | 19,915 |
| 52 | Inyo County | 18,970 |
| 53 | Mariposa County | 17,147 |
| 54 | Trinity County | 16,060 |
| 55 | Mono County | 13,247 |
| 56 | Modoc County | 8,661 |
| 57 | Sierra County | 3,283 |
| 58 | Alpine County | 1,235 |
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United States Census Bureau. B01001 SEX BY AGE, 2020 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 17 March 2022. http://www.census.gov/. United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2021. U.S. Census Bureau, Population Division. Web. May 2022. http://www.census.gov/. |
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