California / Counties by Population

California Counties by Population

Below are the 58 California counties sorted by population from 1 to 58 . The population data are from the 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 10,040,682
2 San Diego County 3,323,970
3 Orange County 3,170,345
4 Riverside County 2,437,864
5 San Bernardino County 2,162,532
6 Santa Clara County 1,924,379
7 Alameda County 1,661,584
8 Sacramento County 1,537,948
9 Contra Costa County 1,147,788
10 Fresno County 990,204
11 Kern County 892,458
12 San Francisco County 874,784
13 Ventura County 845,599
14 San Mateo County 765,623
15 San Joaquin County 751,615
16 Stanislaus County 546,235
17 Sonoma County 496,801
18 Tulare County 463,955
19 Santa Barbara County 444,895
20 Solano County 444,538
21 Monterey County 432,977
22 Placer County 391,799
23 San Luis Obispo County 282,517
24 Merced County 273,661
25 Santa Cruz County 273,170
26 Marin County 259,441
27 Butte County 223,344
28 Yolo County 218,774
29 El Dorado County 190,345
30 Imperial County 180,580
31 Shasta County 179,267
32 Madera County 155,925
33 Kings County 151,090
34 Napa County 138,572
35 Humboldt County 136,101
36 Nevada County 99,417
37 Sutter County 96,315
38 Mendocino County 87,110
39 Yuba County 77,524
40 Lake County 64,276
41 Tehama County 64,176
42 San Benito County 61,547
43 Tuolumne County 54,147
44 Calaveras County 45,828
45 Siskiyou County 43,516
46 Amador County 39,023
47 Lassen County 30,600
48 Glenn County 28,060
49 Del Norte County 27,692
50 Colusa County 21,491
51 Plumas County 18,844
52 Inyo County 17,930
53 Mariposa County 17,319
54 Mono County 14,395
55 Trinity County 12,541
56 Modoc County 8,853
57 Sierra County 2,898
58 Alpine County 1,159

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/.

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