Demographics Table
Demographic Data Report for California by County
Population: Age under 18
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 Under 18)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| California | N/A | 22.2 | 8,729,012 | 23 of 52 |
| United States | N/A | 22.2 | 73,645,238 | N/A |
| Sierra County | Rural | 12.8 | 349 | 3,111 |
| San Francisco County | Urban | 13.7 | 114,728 | 3,100 |
| Amador County | Rural | 15.5 | 6,356 | 3,036 |
| Mariposa County | Rural | 16.8 | 2,874 | 2,927 |
| Calaveras County | Rural | 16.9 | 7,768 | 2,917 |
| Nevada County | Rural | 17.1 | 17,514 | 2,892 |
| Tuolumne County | Rural | 17.2 | 9,428 | 2,882 |
| Plumas County | Rural | 17.5 | 3,430 | 2,844 |
| San Luis Obispo County | Urban | 17.6 | 49,564 | 2,835 |
| Lassen County | Rural | 17.9 | 5,580 | 2,778 |
| Trinity County | Rural | 18.3 | 2,912 | 2,702 |
| Mono County | Rural | 18.4 | 2,419 | 2,684 |
| Santa Cruz County | Urban | 18.8 | 49,902 | 2,608 |
| Humboldt County | Rural | 19.0 | 25,685 | 2,557 |
| Modoc County | Rural | 19.2 | 1,661 | 2,514 |
| Sonoma County | Urban | 19.3 | 93,938 | 2,489 |
| El Dorado County | Urban | 19.7 | 37,917 | 2,378 |
| Marin County | Urban | 19.7 | 51,012 | 2,378 |
| Napa County | Urban | 19.9 | 27,023 | 2,329 |
| San Mateo County | Urban | 19.9 | 148,064 | 2,329 |
| Alameda County | Urban | 20.0 | 331,035 | 2,300 |
| Siskiyou County | Rural | 20.1 | 8,827 | 2,274 |
| Inyo County | Rural | 20.3 | 3,819 | 2,213 |
| Butte County | Urban | 20.5 | 42,935 | 2,151 |
| Yolo County | Urban | 20.5 | 44,638 | 2,151 |
| Los Angeles County | Urban | 20.9 | 2,057,536 | 2,008 |
| Del Norte County | Rural | 21.0 | 5,728 | 1,977 |
| Santa Clara County | Urban | 21.0 | 398,753 | 1,977 |
| Mendocino County | Rural | 21.1 | 19,142 | 1,936 |
| San Diego County | Urban | 21.1 | 694,169 | 1,936 |
| Orange County | Urban | 21.3 | 674,833 | 1,876 |
| Shasta County | Urban | 21.7 | 39,404 | 1,683 |
| Lake County | Rural | 21.8 | 14,828 | 1,646 |
| Placer County | Urban | 22.0 | 90,610 | 1,567 |
| Solano County | Urban | 22.1 | 99,424 | 1,518 |
| Contra Costa County | Urban | 22.2 | 258,092 | 1,469 |
| Ventura County | Urban | 22.2 | 185,795 | 1,469 |
| Santa Barbara County | Urban | 22.4 | 99,608 | 1,385 |
| Alpine County | Rural | 22.6 | 383 | 1,288 |
| Sacramento County | Urban | 23.1 | 365,667 | 1,087 |
| Tehama County | Rural | 24.1 | 15,783 | 687 |
| Riverside County | Urban | 24.4 | 598,671 | 594 |
| Sutter County | Urban | 25.4 | 25,168 | 378 |
| San Benito County | Urban | 25.5 | 16,820 | 355 |
| San Bernardino County | Urban | 25.8 | 563,979 | 315 |
| Monterey County | Urban | 26.0 | 113,201 | 281 |
| Glenn County | Rural | 26.2 | 7,501 | 259 |
| San Joaquin County | Urban | 26.5 | 208,930 | 234 |
| Stanislaus County | Urban | 26.9 | 148,315 | 204 |
| Kings County | Urban | 27.1 | 41,374 | 187 |
| Colusa County | Rural | 27.3 | 5,987 | 176 |
| Yuba County | Urban | 27.3 | 22,640 | 176 |
| Madera County | Urban | 27.4 | 43,447 | 173 |
| Fresno County | Urban | 28.0 | 283,823 | 136 |
| Imperial County | Urban | 28.5 | 51,116 | 121 |
| Kern County | Urban | 28.8 | 262,550 | 115 |
| Merced County | Urban | 29.1 | 83,242 | 103 |
| Tulare County | Urban | 30.1 | 143,115 | 74 |
Notes:
Created by statecancerprofiles.cancer.gov on 07/13/2025 6:36 am.
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 under 18, see the dictionary.
Data for United States does not include Puerto Rico.
Created by statecancerprofiles.cancer.gov on 07/13/2025 6:36 am.
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 under 18, see the dictionary.
Data for United States does not include Puerto Rico.