California / Counties by Population

California Counties by Population

The data is from the US Census. Below are 58 California counties ranked 1 through 58. 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 10,105,518
2 San Diego County 3,343,364
3 Orange County 3,185,968
4 Riverside County 2,450,758
5 San Bernardino County 2,171,603
6 Santa Clara County 1,937,570
7 Alameda County 1,666,753
8 Sacramento County 1,540,975
9 Contra Costa County 1,150,215
10 Fresno County 994,400
11 Kern County 896,764
12 San Francisco County 883,305
13 Ventura County 850,967
14 San Mateo County 769,545
15 San Joaquin County 752,660
16 Stanislaus County 549,815
17 Sonoma County 499,942
18 Tulare County 465,861
19 Solano County 446,610
20 Santa Barbara County 446,527
21 Monterey County 435,594
22 Placer County 393,149
23 San Luis Obispo County 284,010
24 Merced County 274,765
25 Santa Cruz County 274,255
26 Marin County 259,666
27 Butte County 231,256
28 Yolo County 220,408
29 El Dorado County 190,678
30 Imperial County 181,827
31 Shasta County 180,040
32 Madera County 157,672
33 Kings County 151,366
34 Napa County 139,417
35 Humboldt County 136,373
36 Nevada County 99,696
37 Sutter County 96,807
38 Mendocino County 87,606
39 Yuba County 78,041
40 Lake County 64,382
41 Tehama County 63,916
42 San Benito County 61,537
43 Tuolumne County 54,539
44 Calaveras County 45,602
45 Siskiyou County 43,724
46 Amador County 39,383
47 Lassen County 30,802
48 Glenn County 28,047
49 Del Norte County 27,828
50 Colusa County 21,627
51 Plumas County 18,804
52 Inyo County 17,987
53 Mariposa County 17,471
54 Mono County 14,250
55 Trinity County 12,535
56 Modoc County 8,777
57 Sierra County 2,987
58 Alpine County 1,101

United States Census Bureau. B01001 SEX BY AGE, 2017 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 6 December 2018. http://www.census.gov/.

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2018. U.S. Census Bureau, Population Division. Web. May 2019. http://www.census.gov/.

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