Demographics Table
Demographic Data Report for California by County
Population: Age 40 and over
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Rank
County
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age 40 And Over)
|
Rank within US (of 3143 counties) 
|
|---|---|---|---|---|
| United States | N/A | 48.3 | 160,683,909 | N/A |
| California | N/A | 46.7 | 18,316,465 | 41 of 52 |
| Sierra County | Rural | 70.9 | 1,937 | 14 |
| Trinity County | Rural | 64.8 | 10,298 | 81 |
| Mariposa County | Rural | 63.1 | 10,761 | 124 |
| Calaveras County | Rural | 62.1 | 28,559 | 159 |
| Nevada County | Rural | 61.2 | 62,673 | 186 |
| Plumas County | Rural | 61.0 | 11,965 | 197 |
| Amador County | Rural | 60.9 | 25,000 | 206 |
| Marin County | Urban | 59.5 | 153,894 | 296 |
| Tuolumne County | Rural | 59.4 | 32,595 | 305 |
| Modoc County | Rural | 58.5 | 5,059 | 371 |
| Siskiyou County | Rural | 57.9 | 25,387 | 446 |
| Inyo County | Rural | 57.5 | 10,818 | 493 |
| El Dorado County | Urban | 57.1 | 109,853 | 535 |
| Lake County | Rural | 55.0 | 37,446 | 818 |
| Mendocino County | Rural | 54.5 | 49,469 | 912 |
| Sonoma County | Urban | 53.9 | 261,520 | 1,056 |
| Placer County | Urban | 53.5 | 220,454 | 1,137 |
| Napa County | Urban | 53.2 | 72,425 | 1,214 |
| Shasta County | Urban | 52.4 | 95,137 | 1,415 |
| Alpine County | Rural | 51.1 | 866 | 1,751 |
| San Mateo County | Urban | 50.9 | 379,080 | 1,802 |
| Del Norte County | Rural | 50.8 | 13,873 | 1,823 |
| Mono County | Rural | 50.7 | 6,680 | 1,843 |
| Contra Costa County | Urban | 50.5 | 586,303 | 1,892 |
| San Luis Obispo County | Urban | 50.2 | 141,285 | 1,964 |
| Tehama County | Rural | 50.2 | 32,879 | 1,964 |
| Santa Cruz County | Urban | 49.6 | 131,850 | 2,089 |
| San Francisco County | Urban | 49.5 | 413,796 | 2,114 |
| Humboldt County | Rural | 49.4 | 66,843 | 2,131 |
| Ventura County | Urban | 49.3 | 413,127 | 2,161 |
| Orange County | Urban | 48.8 | 1,544,859 | 2,265 |
| Solano County | Urban | 48.6 | 219,191 | 2,301 |
| Alameda County | Urban | 48.0 | 792,869 | 2,413 |
| Lassen County | Rural | 47.4 | 14,778 | 2,489 |
| Los Angeles County | Urban | 47.1 | 4,634,641 | 2,522 |
| Santa Clara County | Urban | 46.8 | 890,438 | 2,556 |
| Sacramento County | Urban | 45.9 | 727,044 | 2,669 |
| San Diego County | Urban | 45.7 | 1,501,432 | 2,687 |
| Glenn County | Rural | 45.6 | 13,058 | 2,697 |
| Riverside County | Urban | 45.6 | 1,117,756 | 2,697 |
| Sutter County | Urban | 45.6 | 45,119 | 2,697 |
| Butte County | Urban | 45.5 | 95,387 | 2,713 |
| Colusa County | Rural | 45.3 | 9,926 | 2,732 |
| Monterey County | Urban | 43.9 | 191,548 | 2,829 |
| Santa Barbara County | Urban | 43.7 | 193,896 | 2,842 |
| San Benito County | Urban | 43.4 | 28,671 | 2,866 |
| San Joaquin County | Urban | 43.3 | 341,175 | 2,873 |
| Madera County | Urban | 43.0 | 68,312 | 2,889 |
| Stanislaus County | Urban | 42.8 | 236,373 | 2,903 |
| San Bernardino County | Urban | 42.3 | 925,077 | 2,922 |
| Imperial County | Urban | 40.6 | 72,746 | 3,004 |
| Fresno County | Urban | 40.3 | 408,111 | 3,012 |
| Yuba County | Urban | 40.1 | 33,314 | 3,020 |
| Yolo County | Urban | 40.0 | 87,146 | 3,023 |
| Kern County | Urban | 39.3 | 358,023 | 3,043 |
| Tulare County | Urban | 38.9 | 185,150 | 3,051 |
| Merced County | Urban | 38.7 | 110,657 | 3,059 |
| Kings County | Urban | 37.9 | 57,936 | 3,079 |
Notes:
Created by statecancerprofiles.cancer.gov on 04/22/2025 6:42 pm.
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 40 and over, see the dictionary.
Data for United States does not include Puerto Rico.
Created by statecancerprofiles.cancer.gov on 04/22/2025 6:42 pm.
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 40 and over, see the dictionary.
Data for United States does not include Puerto Rico.