California
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California Population News Articles
Population Density
Historic & Projected Growth
Population by County
POPULATION DENSITY
People per square mile, 2010: 239.1
People per square mile, 2020: 253.7
HISTORIC & PROJECTED GROWTH 1790 TO 2040
Year |
Population |
1790 |
0 |
1800 |
0 |
1810 |
0 |
1820 |
0 |
1830 |
0 |
1840 |
0 |
1850 |
92,597 |
1860 |
379,994 |
1870 |
560,247 |
1880 |
864,694 |
1890 |
1,213,398 |
1900 |
1,485,053 |
1910 |
2,377,549 |
1920 |
3,426,861 |
1930 |
5,677,251 |
1940 |
6,907,387 |
1950 |
10,586,223 |
1960 |
15,717,204 |
1970 |
19,971,069 |
1980 |
23,667,764 |
1990 |
29,760,021 |
2000 |
33,871,648 |
2010 |
37,253,956 |
2020 |
39,538,223 |
2030 |
43,751,116 |
2040 |
46,467,001 |
SOURCE: U.S. Bureau of the Census & Weldon Cooper Center, Demographics Research Group
(The Census Bureau and Weldon Cooper Center have not yet provided updated State projections to reflect 2020 census numbers.)
Population by County
Census 2020 Population |
Census 2010 Population |
Change from 2010 |
Percent Change |
|
California |
39,538,223 |
37,253,956 |
2,284,267 |
5.78% |
Alameda County |
1,682,353 |
1,510,271 |
172,082 |
10.23% |
Alpine County |
1,204 |
1,175 |
29 |
2.41% |
Amador County |
40,474 |
38,091 |
2,383 |
5.89% |
Butte County |
211,632 |
220,000 |
-8,368 |
-3.95% |
Calaveras County |
45,292 |
45,578 |
-286 |
-0.63% |
Colusa County |
21,839 |
21,419 |
420 |
1.92% |
Contra Costa County |
1,165,927 |
1,049,025 |
116,902 |
10.03% |
Del Norte County |
27,743 |
28,610 |
-867 |
-3.13% |
El Dorado County |
191,185 |
181,058 |
10,127 |
5.30% |
Fresno County |
1,008,654 |
930,450 |
78,204 |
7.75% |
Glenn County |
28,917 |
28,122 |
795 |
2.75% |
Humboldt County |
136,463 |
134,623 |
1,840 |
1.35% |
Imperial County |
179,702 |
174,528 |
5,174 |
2.88% |
Inyo County |
19,016 |
18,546 |
470 |
2.47% |
Kern County |
909,235 |
839,631 |
69,604 |
7.66% |
Kings County |
152,486 |
152,982 |
-496 |
-0.33% |
Lake County |
68,163 |
64,665 |
3,498 |
5.13% |
Lassen County |
32,730 |
34,895 |
-2,165 |
-6.61% |
Los Angeles County |
10,014,009 |
9,818,605 |
195,404 |
1.95% |
Madera County |
156,255 |
150,865 |
5,390 |
3.45% |
Marin County |
262,321 |
252,409 |
9,912 |
3.78% |
Mariposa County |
17,131 |
18,251 |
-1,120 |
-6.54% |
Mendocino County |
91,601 |
87,841 |
3,760 |
4.10% |
Merced County |
281,202 |
255,793 |
25,409 |
9.04% |
Modoc County |
8,700 |
9,686 |
-986 |
-11.33% |
Mono County |
13,195 |
14,202 |
-1,007 |
-7.63% |
Monterey County |
439,035 |
415,057 |
23,978 |
5.46% |
Napa County |
138,019 |
136,484 |
1,535 |
1.11% |
Nevada County |
102,241 |
98,764 |
3,477 |
3.40% |
Orange County |
3,186,989 |
3,010,232 |
176,757 |
5.55% |
Placer County |
404,739 |
348,432 |
56,307 |
13.91% |
Plumas County |
19,790 |
20,007 |
-217 |
-1.10% |
Riverside County |
2,418,185 |
2,189,641 |
228,544 |
9.45% |
Sacramento County |
1,585,055 |
1,418,788 |
166,267 |
10.49% |
San Benito County |
64,209 |
55,269 |
8,940 |
13.92% |
San Bernardino County |
2,181,654 |
2,035,210 |
146,444 |
6.71% |
San Diego County |
3,298,634 |
3,095,313 |
203,321 |
6.16% |
San Francisco County |
873,965 |
805,235 |
68,730 |
7.86% |
San Joaquin County |
779,233 |
685,306 |
93,927 |
12.05% |
San Luis Obispo County |
282,424 |
269,637 |
12,787 |
4.53% |
San Mateo County |
764,442 |
718,451 |
45,991 |
6.02% |
Santa Barbara County |
448,229 |
423,895 |
24,334 |
5.43% |
Santa Clara County |
1,936,259 |
1,781,642 |
154,617 |
7.99% |
Santa Cruz County |
270,861 |
262,382 |
8,479 |
3.13% |
Shasta County |
182,155 |
177,223 |
4,932 |
2.71% |
Sierra County |
3,236 |
3,240 |
-4 |
-0.12% |
Siskiyou County |
44,076 |
44,900 |
-824 |
-1.87% |
Solano County |
453,491 |
413,344 |
40,147 |
8.85% |
Sonoma County |
488,863 |
483,878 |
4,985 |
1.02% |
Stanislaus County |
552,878 |
514,453 |
38,425 |
6.95% |
Sutter County |
99,633 |
94,737 |
4,896 |
4.91% |
Tehama County |
65,829 |
63,463 |
2,366 |
3.59% |
Trinity County |
16,112 |
13,786 |
2,326 |
14.44% |
Tulare County |
473,117 |
442,179 |
30,938 |
6.54% |
Tuolumne County |
55,620 |
55,365 |
255 |
0.46% |
Ventura County |
843,843 |
823,318 |
20,525 |
2.43% |
Yolo County |
216,403 |
200,849 |
15,554 |
7.19% |
Yuba County |
81,575 |
72,155 |
9,420 |
11.55% |
SOURCE: U.S. Bureau of the Census
California Population News Articles
Fire debris is washing up on L.A.’s beaches. County officials warn the public to steer clear – Feb 24, 2025
What Is the Environmental Impact of the California Wildfires? 5 Things to Know – Feb 23, 2025
LA Fires Spark Confusion and Concern Over Water Quality and Supply – Feb 20, 2025
California Faces ‘Unprecedented’ Population Shift – Feb 12, 2025
California farmworker explains how undocumented immigrants find work – Feb 5, 2025
‘Hotter, Drier, and More Flammable”: New Study Finds Climate Change Played a Role in LA Fires – Feb 4, 2025
Watch: Dangers of extreme heat in Inland California – Oct 30, 2024
Warehouses Drive Air Pollution Spike in California, NASA Study Finds – Oct 11. 2024
Homeless population grows in California’s most populous city – Oct 8, 2024
Tijuana River Sewage Contamination a ‘Public Health Crisis’ – Feb 15, 2024
New study warns of worsening air pollution in California due to wildfires – Feb 14, 2024
California’s air pollution fight just got tougher: New EPA standards raise the bar on soot – Feb 7, 2024
California Sees Surge in Chinese Migrants – Feb 8, 2024
Why record rain hasn’t washed away California’s water woes – Feb 6, 2024
Recent reports reinforce migration trends out of LA, California – Jan 26, 2024
Sweeping California water conservation rules could force big cuts in some areas – September 7, 2023
Climate change makes wildfires in California more explosive – August 30, 2023
Sustained exposure to wildfire smoke reducing life expectancy in parts of California: report – August 29, 2023
Tropical Storm Hilary and Maui Fires Show Climate Change is Worsening Homelessness – August 24, 2023
How climate change shaped California’s first tropical storm in decades – August 21, 2023
Salmon fishing to be banned in California and part of Oregon after a drought and weakened protections decimated the fish population – Mar 24, 2023
What Does All This Rain Mean for California’s Drought? – Mar 23, 2023
California’s punishing winter storms pummel monarch butterfly population – Mar 17, 2023
2 California cities have worst air pollution in US: study – Mar 13, 2023
Tijuana River sewage may be contaminating air along Southern California coast: study – Mar 2, 2023
As California begins monitoring microplastics in water, experts brace for health impacts – September 23, 2022
California plans to phase out new gas heaters by 2030 – September 23, 2022
Rising homelessness is tearing California cities apart – September 21, 2022
Where Los Angeles ranks among California’s most polluted cities – September 11, 2022
California says the beaver can be superhero in fighting climate change – September 7, 2022
California housing and the super commuter problem – June 10, 2022
Parts of Southern California used 26% more water in April, despite conservation pleas – June 7, 2022
These are the impacts of California’s worst drought on record – Jun 7, 2022
4 Factors Affecting Air Pollution in California – June 2, 2022
Disaster upon disaster: Wildfires are contaminating the West’s depleting water with ashy sludge – May 29, 2022
Environmental Groups Ask California to Stop Subsidizing the Dairy Industry – February 8, 2022
Global warming could cause more California blackouts in the next decade – February 7, 2022
Climate change whiplash could mean more flooding, water-management challenges in California – January 28, 2022
Wealthy California District to Restrict Water for Residents Consistently Overusing Supply – January 19, 2022
Study: Nearly 400,000 Californians lack safe drinking water, often due to ag pollution – January 12, 2022