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California Counties by Population

List all 58 counties of California by population
2020 US Census
Quiz by burtviile
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Last updated: May 9, 2023
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First submittedMarch 22, 2016
Times taken289
Average score39.7%
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Population
County
10,014,009
Los Angeles
3,298,634
San Diego
3,186,989
Orange
2,418,185
Riverside
2,181,654
San Bernardino
1,936,259
Santa Clara
1,682,353
Alameda
1,585,055
Sacramento
1,165,927
Contra Costa
1,008,654
Fresno
909,235
Kern
873,965
San Francisco
843,843
Ventura
779,233
San Joaquin
764,442
San Mateo
552,878
Stanislaus
488,863
Sonoma
473,117
Tulare
453,491
Solano
448,229
Santa Barbara
Population
County
439,035
Monterey
404,739
Placer
282,424
San Luis Obispo
281,202
Merced
270,861
Santa Cruz
262,231
Marin
216,403
Yolo
211,632
Butte
191,185
El Dorado
182,155
Shasta
179,702
Imperial
156,255
Madera
152,940
Kings
138,019
Napa
136,463
Humboldt
102,241
Nevada
99,633
Sutter
91,601
Mendocino
81,575
Yuba
Population
County
68,163
Lake
65,829
Tehama
64,209
San Benito
55,620
Tuolumne
45,292
Calaveras
44,076
Siskiyou
40,474
Amador
32,730
Lassen
28,917
Glenn
27,743
Del Norte
21,839
Colusa
19,790
Plumas
19,016
Inyo
17,131
Mariposa
16,112
Trinity
13,195
Mono
8,700
Modoc
3,236
Sierra
1,204
Alpine
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