California 2016 Population By County
Updated on December 2, 2021.

According to the US Census Bureau population estimates, there were 39,149,186 people living in California in 2016. Los Angeles County was the most populated county with 10,094,865 residents, followed by San Diego County with 3,305,462 residents, and Orange County with 3,164,277 residents. Alpine County with a population of 1,053 was the least populated county in California in 2016.

Use the map below to interactively explore the population of each county in California in 2016. The data can also be explored further by sorting and filtering with the table below.

California 2016 Population By County
See also Population estimate for other years:
Table of California 2016 Population By County
Items per page:
0 of 0
County Population % of State Population
Alameda 1,650,765 4.22
Alpine 1,053 0.00
Amador 37,443 0.10
Butte 226,222 0.58
Calaveras 45,307 0.12
Colusa 21,476 0.06
Contra Costa 1,137,259 2.91
Del Norte 27,415 0.07
El Dorado 186,027 0.48
Fresno 976,231 2.49
Glenn 27,796 0.07
Humboldt 136,477 0.35
Imperial 179,881 0.46
Inyo 17,897 0.05
Kern 881,094 2.25
Kings 149,269 0.38
Lake 63,912 0.16
Lassen 30,715 0.08
Los Angeles 10,094,865 25.79
Madera 153,694 0.39
Marin 260,722 0.67
Mariposa 17,498 0.05
Mendocino 87,319 0.22
Merced 267,370 0.68
Modoc 8,957 0.02
Mono 14,256 0.04
Monterey 433,436 1.11
Napa 140,778 0.36
Nevada 98,939 0.25
Orange 3,164,277 8.08
Placer 379,046 0.97
Plumas 18,691 0.05
Riverside 2,378,282 6.08
Sacramento 1,511,401 3.86
San Benito 59,270 0.15
San Bernardino 2,130,726 5.44
San Diego 3,305,462 8.44
San Francisco 871,343 2.23
San Joaquin 732,662 1.87
San Luis Obispo 281,884 0.72
San Mateo 767,928 1.96
Santa Barbara 444,112 1.13
Santa Clara 1,928,144 4.93
Santa Cruz 274,476 0.70
Shasta 178,592 0.46
Sierra 2,956 0.01
Siskiyou 43,402 0.11
Solano 438,834 1.12
Sonoma 502,445 1.28
Stanislaus 538,986 1.38
Sutter 95,769 0.25
Tehama 63,468 0.16
Trinity 12,827 0.03
Tulare 458,991 1.17
Tuolumne 53,729 0.14
Ventura 846,921 2.16
Yolo 215,569 0.55
Yuba 74,920 0.19