Demographics Table
Demographic Data Report for California by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Value
County
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age 18-39)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| California | N/A | 31.1 | 12,197,308 | 7 of 52 |
| United States | N/A | 29.5 | 98,058,393 | N/A |
| Yolo County | Urban | 39.5 | 85,998 | 67 |
| San Francisco County | Urban | 36.8 | 307,797 | 99 |
| Kings County | Urban | 35.0 | 53,520 | 156 |
| Lassen County | Rural | 34.7 | 10,819 | 170 |
| Butte County | Urban | 34.0 | 71,148 | 190 |
| Santa Barbara County | Urban | 33.9 | 150,471 | 196 |
| San Diego County | Urban | 33.1 | 1,087,181 | 230 |
| Yuba County | Urban | 32.6 | 27,125 | 250 |
| Santa Clara County | Urban | 32.3 | 614,106 | 265 |
| San Luis Obispo County | Urban | 32.2 | 90,637 | 276 |
| Merced County | Urban | 32.1 | 91,698 | 281 |
| Alameda County | Urban | 32.0 | 528,045 | 292 |
| Los Angeles County | Urban | 32.0 | 3,156,229 | 292 |
| San Bernardino County | Urban | 31.9 | 698,760 | 297 |
| Kern County | Urban | 31.8 | 289,860 | 303 |
| Humboldt County | Rural | 31.7 | 42,890 | 310 |
| Santa Cruz County | Urban | 31.7 | 84,269 | 310 |
| Fresno County | Urban | 31.6 | 320,218 | 317 |
| San Benito County | Urban | 31.1 | 20,565 | 361 |
| Sacramento County | Urban | 31.0 | 491,336 | 369 |
| Tulare County | Urban | 31.0 | 147,509 | 369 |
| Imperial County | Urban | 30.9 | 55,457 | 376 |
| Mono County | Rural | 30.9 | 4,070 | 376 |
| Stanislaus County | Urban | 30.3 | 167,562 | 440 |
| Monterey County | Urban | 30.1 | 131,085 | 470 |
| San Joaquin County | Urban | 30.1 | 237,311 | 470 |
| Riverside County | Urban | 29.9 | 733,482 | 500 |
| Orange County | Urban | 29.8 | 944,371 | 512 |
| Madera County | Urban | 29.6 | 47,031 | 549 |
| San Mateo County | Urban | 29.3 | 217,956 | 602 |
| Solano County | Urban | 29.3 | 132,209 | 602 |
| Sutter County | Urban | 29.0 | 28,684 | 662 |
| Ventura County | Urban | 28.6 | 239,337 | 738 |
| Del Norte County | Rural | 28.2 | 7,692 | 813 |
| Glenn County | Rural | 28.2 | 8,064 | 813 |
| Colusa County | Rural | 27.3 | 5,982 | 1,035 |
| Contra Costa County | Urban | 27.3 | 317,063 | 1,035 |
| Napa County | Urban | 26.9 | 36,622 | 1,143 |
| Sonoma County | Urban | 26.8 | 130,184 | 1,180 |
| Alpine County | Rural | 26.3 | 446 | 1,356 |
| Shasta County | Urban | 25.9 | 47,013 | 1,514 |
| Tehama County | Rural | 25.7 | 16,858 | 1,585 |
| Placer County | Urban | 24.6 | 101,371 | 1,991 |
| Mendocino County | Rural | 24.4 | 22,098 | 2,056 |
| Amador County | Rural | 23.6 | 9,673 | 2,294 |
| Tuolumne County | Rural | 23.4 | 12,850 | 2,359 |
| Lake County | Rural | 23.3 | 15,865 | 2,387 |
| El Dorado County | Urban | 23.2 | 44,529 | 2,414 |
| Modoc County | Rural | 22.3 | 1,926 | 2,639 |
| Inyo County | Rural | 22.2 | 4,166 | 2,663 |
| Siskiyou County | Rural | 21.9 | 9,620 | 2,718 |
| Nevada County | Rural | 21.7 | 22,265 | 2,751 |
| Plumas County | Rural | 21.5 | 4,212 | 2,780 |
| Calaveras County | Rural | 21.0 | 9,668 | 2,857 |
| Marin County | Urban | 20.8 | 53,859 | 2,882 |
| Mariposa County | Rural | 20.1 | 3,425 | 2,954 |
| Trinity County | Rural | 16.8 | 2,676 | 3,099 |
| Sierra County | Rural | 16.3 | 445 | 3,116 |
Notes:
Created by statecancerprofiles.cancer.gov on 02/09/2026 7:08 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 18-39, see the dictionary.
Data for United States does not include Puerto Rico.
Created by statecancerprofiles.cancer.gov on 02/09/2026 7:08 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 18-39, see the dictionary.
Data for United States does not include Puerto Rico.