California Population By County in 2022

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2022, the population of California was 39,040,616. Among all California counties, Los Angeles had the highest population (9,719,765), followed by San Diego (3,277,176), and Orange (3,150,372). Alpine was the least populated county (1,190).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.

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California Population By County in 2022
California Population By County in 2022
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County Population % of State Population
Alameda 1628259 4.17
Alpine 1190 0.00
Amador 41493 0.11
Butte 207369 0.53
Calaveras 46556 0.12
Colusa 21909 0.06
Contra Costa 1157019 2.96
Del Norte 27112 0.07
El Dorado 192787 0.49
Fresno 1015359 2.60
Glenn 28360 0.07
Humboldt 134944 0.35
Imperial 178940 0.46
Inyo 18742 0.05
Kern 916751 2.35
Kings 152987 0.39
Lake 68172 0.18
Lassen 30020 0.08
Los Angeles 9719765 24.90
Madera 160329 0.41
Marin 256154 0.66
Mariposa 17053 0.04
Mendocino 90007 0.23
Merced 290210 0.74
Modoc 8619 0.02
Mono 13002 0.03
Monterey 432884 1.11
Napa 134370 0.34
Nevada 102401 0.26
Orange 3150372 8.07
Placer 418074 1.07
Plumas 19443 0.05
Riverside 2474241 6.34
Sacramento 1584380 4.06
San Benito 67643 0.17
San Bernardino 2194908 5.62
San Diego 3277176 8.39
San Francisco 807774 2.07
San Joaquin 794293 2.04
San Luis Obispo 282046 0.72
San Mateo 728929 1.87
Santa Barbara 443915 1.14
Santa Clara 1878335 4.81
Santa Cruz 264240 0.68
Shasta 180937 0.46
Sierra 3222 0.01
Siskiyou 43786 0.11
Solano 448885 1.15
Sonoma 482669 1.24
Stanislaus 551226 1.41
Sutter 98569 0.25
Tehama 65299 0.17
Trinity 15778 0.04
Tulare 477884 1.22
Tuolumne 54587 0.14
Ventura 832871 2.13
Yolo 222018 0.57
Yuba 84353 0.22