California / Counties by Population

California Counties by Population

The data is from the US Census. Below are 1490 California counties ranked 1 through 58 (there are some ties). 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 10,081,570
2 San Diego County 3,316,073
3 Orange County 3,168,044
4 Riverside County 2,411,439
5 San Bernardino County 2,149,031
6 Santa Clara County 1,927,470
7 Alameda County 1,656,754
8 Sacramento County 1,524,553
9 Contra Costa County 1,142,251
10 Fresno County 984,521
11 Kern County 887,641
12 San Francisco County 874,961
13 Ventura County 847,263
14 San Mateo County 767,423
15 San Joaquin County 742,603
16 Stanislaus County 543,194
17 Sonoma County 499,772
18 Tulare County 461,898
19 Santa Barbara County 444,829
20 Solano County 441,829
21 Monterey County 433,410
22 Placer County 385,512
23 San Luis Obispo County 282,165
24 Santa Cruz County 273,962
25 Merced County 271,382
26 Marin County 259,943
27 Butte County 225,817
28 Yolo County 217,352
29 El Dorado County 188,563
30 Imperial County 180,701
31 Shasta County 179,212
32 Madera County 155,433
33 Kings County 150,691
34 Napa County 139,623
35 Humboldt County 135,940
36 Nevada County 99,244
37 Sutter County 96,109
38 Mendocino County 87,224
39 Yuba County 76,360
40 Lake County 64,195
41 Tehama County 63,912
42 San Benito County 60,376
43 Tuolumne County 54,045
44 Calaveras County 45,514
45 Siskiyou County 43,468
46 Amador County 38,429
47 Lassen County 30,818
48 Glenn County 27,976
49 Del Norte County 27,495
50 Colusa County 21,454
51 Plumas County 18,660
52 Inyo County 17,977
53 Mariposa County 17,420
54 Mono County 14,310
55 Trinity County 12,700
56 Modoc County 8,907
57 Sierra County 3,040
58 Alpine County 1,039

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2019. U.S. Census Bureau, Population Division. Web. May 2020. http://www.census.gov/.

United States Census Bureau. B01001 SEX BY AGE, 2019 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 10 December 2020. http://www.census.gov/.

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