Demographics Table
Demographic Data Report for California by County
Population: Age 40-64
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
County
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age 40-64)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| California | N/A | 31.3 | 12,308,540 | 27 of 52 |
| United States | N/A | 31.3 | 104,825,270 | N/A |
| Sierra County | Rural | 36.3 | 998 | 69 |
| Mono County | Rural | 36.1 | 4,740 | 80 |
| Marin County | Urban | 36.0 | 92,815 | 90 |
| Trinity County | Rural | 34.5 | 5,477 | 282 |
| El Dorado County | Urban | 34.0 | 65,464 | 425 |
| Contra Costa County | Urban | 33.7 | 392,663 | 519 |
| Amador County | Rural | 33.5 | 13,862 | 603 |
| San Mateo County | Urban | 33.5 | 248,735 | 603 |
| Placer County | Urban | 33.2 | 139,200 | 745 |
| Alameda County | Urban | 33.1 | 545,816 | 790 |
| Orange County | Urban | 33.0 | 1,045,184 | 851 |
| Calaveras County | Rural | 32.8 | 15,151 | 961 |
| Napa County | Urban | 32.7 | 44,137 | 1,006 |
| Sonoma County | Urban | 32.7 | 158,787 | 1,006 |
| Mariposa County | Rural | 32.6 | 5,571 | 1,055 |
| San Francisco County | Urban | 32.4 | 268,672 | 1,175 |
| Inyo County | Rural | 32.3 | 6,055 | 1,236 |
| Los Angeles County | Urban | 32.3 | 3,168,465 | 1,236 |
| Santa Clara County | Urban | 32.3 | 614,893 | 1,236 |
| Ventura County | Urban | 32.1 | 268,969 | 1,357 |
| Nevada County | Rural | 31.8 | 32,618 | 1,520 |
| Lassen County | Rural | 31.4 | 9,524 | 1,748 |
| Solano County | Urban | 31.4 | 142,011 | 1,748 |
| Lake County | Rural | 31.3 | 21,315 | 1,808 |
| Shasta County | Urban | 31.1 | 56,355 | 1,896 |
| Tuolumne County | Rural | 31.1 | 16,945 | 1,896 |
| Sacramento County | Urban | 30.9 | 493,030 | 1,998 |
| Mendocino County | Rural | 30.8 | 27,786 | 2,054 |
| Santa Cruz County | Urban | 30.8 | 81,606 | 2,054 |
| San Diego County | Urban | 30.6 | 1,005,697 | 2,150 |
| Riverside County | Urban | 30.5 | 756,733 | 2,198 |
| Siskiyou County | Rural | 30.3 | 13,162 | 2,260 |
| Humboldt County | Rural | 30.0 | 40,416 | 2,361 |
| San Bernardino County | Urban | 30.0 | 659,038 | 2,361 |
| San Joaquin County | Urban | 30.0 | 239,335 | 2,361 |
| Tehama County | Rural | 29.9 | 19,472 | 2,397 |
| San Benito County | Urban | 29.8 | 20,086 | 2,423 |
| Colusa County | Rural | 29.7 | 6,532 | 2,457 |
| Plumas County | Rural | 29.7 | 5,777 | 2,457 |
| Sutter County | Urban | 29.6 | 29,228 | 2,488 |
| Del Norte County | Rural | 29.4 | 7,977 | 2,559 |
| Monterey County | Urban | 29.4 | 128,511 | 2,559 |
| Stanislaus County | Urban | 29.1 | 161,356 | 2,625 |
| Glenn County | Rural | 29.0 | 8,253 | 2,644 |
| Madera County | Urban | 28.6 | 46,051 | 2,728 |
| Alpine County | Rural | 28.3 | 457 | 2,784 |
| San Luis Obispo County | Urban | 28.3 | 79,617 | 2,784 |
| Fresno County | Urban | 27.7 | 281,824 | 2,862 |
| Kern County | Urban | 27.7 | 253,658 | 2,862 |
| Yuba County | Urban | 27.4 | 23,183 | 2,897 |
| Santa Barbara County | Urban | 27.2 | 120,804 | 2,915 |
| Imperial County | Urban | 27.1 | 48,816 | 2,929 |
| Tulare County | Urban | 27.1 | 129,628 | 2,929 |
| Butte County | Urban | 27.0 | 56,184 | 2,940 |
| Kings County | Urban | 26.9 | 41,313 | 2,949 |
| Merced County | Urban | 26.9 | 77,953 | 2,949 |
| Modoc County | Rural | 26.9 | 2,311 | 2,949 |
| Yolo County | Urban | 26.4 | 58,324 | 2,993 |
Notes:
Created by statecancerprofiles.cancer.gov on 03/27/2026 5:06 pm.
Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 40-64, see the dictionary.
Data for United States does not include Puerto Rico.