California Counties by Population

Here is a sorted list of the 58 California counties based on population, starting with the largest and ending with the smallest. The population data originates from the 2022 Population Estimates Program and the 2021 American Community Survey. Feel free to copy and paste this delightful list into your preferred spreadsheet program and enjoy the beauty of neatly organized numbers in rows and columns.

1Los Angeles County9,721,138
2San Diego County3,276,208
3Orange County3,151,184
4Riverside County2,473,902
5San Bernardino County2,193,656
6Santa Clara County1,870,945
7Alameda County1,628,997
8Sacramento County1,584,169
9Contra Costa County1,156,966
10Fresno County1,015,190
11Kern County916,108
12Ventura County832,605
13San Francisco County808,437
14San Joaquin County793,229
15San Mateo County729,181
16Stanislaus County551,275
17Sonoma County482,650
18Tulare County477,544
19Solano County448,747
20Santa Barbara County443,837
21Monterey County432,858
22Placer County417,772
23Merced County290,014
24San Luis Obispo County282,013
25Santa Cruz County264,370
26Marin County256,018
27Yolo County222,115
28Butte County207,303
29El Dorado County192,646
30Shasta County180,930
31Imperial County178,713
32Madera County160,256
33Kings County152,981
34Humboldt County135,010
35Napa County134,300
36Nevada County102,293
37Sutter County98,503
38Mendocino County89,783
39Yuba County84,310
40Lake County68,191
41San Benito County67,579
42Tehama County65,245
43Tuolumne County54,531
44Calaveras County46,563
45Siskiyou County43,660
46Amador County41,412
47Lassen County29,904
48Glenn County28,339
49Del Norte County27,082
50Colusa County21,914
51Plumas County19,351
52Inyo County18,718
53Mariposa County17,020
54Trinity County15,781
55Mono County12,978
56Modoc County8,511
57Sierra County3,217
58Alpine County1,190
The presented table showcases the latest population estimates for cities with available data, derived from the following datasets:
1. United States Census Bureau, B01001 SEX BY AGE” and “2021 American Community Survey 5-Year Estimates” from the office of the U.S. Census Bureau’s American Community Survey. The data was accessed on December 8, 2022.
2. States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2022. U.S. Census Bureau, Population Division.