Demographics Table
Demographic Data Report for California by County
Education: Less than 9th grade
Population Ages 25+
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 (Education: Less Than 9th Grade)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| United States | N/A | 4.7 | 10,803,193 | N/A |
| California | N/A | 8.7 | 2,364,237 | 51 of 52 |
| Alpine County | Rural | 0.7 | 8 | 39 |
| Tuolumne County | Rural | 1.5 | 636 | 309 |
| Nevada County | Rural | 1.6 | 1,294 | 364 |
| Calaveras County | Rural | 1.7 | 597 | 443 |
| El Dorado County | Urban | 1.8 | 2,539 | 485 |
| Mariposa County | Rural | 1.9 | 252 | 548 |
| Trinity County | Rural | 1.9 | 236 | 548 |
| Placer County | Urban | 2.0 | 5,842 | 603 |
| Inyo County | Rural | 2.3 | 316 | 825 |
| Shasta County | Urban | 2.5 | 3,179 | 975 |
| Amador County | Rural | 2.6 | 856 | 1,042 |
| Plumas County | Rural | 2.8 | 426 | 1,194 |
| Humboldt County | Rural | 2.9 | 2,653 | 1,273 |
| Siskiyou County | Rural | 2.9 | 940 | 1,273 |
| Sierra County | Rural | 3.0 | 62 | 1,338 |
| Butte County | Urban | 3.6 | 4,875 | 1,701 |
| San Luis Obispo County | Urban | 3.7 | 7,059 | 1,776 |
| Del Norte County | Rural | 3.9 | 778 | 1,874 |
| Marin County | Urban | 4.5 | 8,574 | 2,134 |
| Mono County | Rural | 4.8 | 488 | 2,249 |
| Lake County | Rural | 4.9 | 2,408 | 2,274 |
| Contra Costa County | Urban | 5.5 | 45,256 | 2,467 |
| Solano County | Urban | 5.7 | 18,025 | 2,519 |
| San Diego County | Urban | 5.9 | 135,422 | 2,571 |
| Modoc County | Rural | 6.0 | 388 | 2,585 |
| San Mateo County | Urban | 6.0 | 32,628 | 2,585 |
| Sacramento County | Urban | 6.2 | 68,445 | 2,637 |
| Santa Clara County | Urban | 6.4 | 86,172 | 2,682 |
| Yolo County | Urban | 6.4 | 8,333 | 2,682 |
| Alameda County | Urban | 6.5 | 78,103 | 2,706 |
| Sonoma County | Urban | 6.6 | 23,312 | 2,718 |
| Tehama County | Rural | 6.7 | 2,996 | 2,741 |
| Mendocino County | Rural | 6.9 | 4,521 | 2,772 |
| San Francisco County | Urban | 6.9 | 45,970 | 2,772 |
| Lassen County | Rural | 7.1 | 1,589 | 2,796 |
| Santa Cruz County | Urban | 7.1 | 12,763 | 2,796 |
| Orange County | Urban | 7.3 | 161,784 | 2,815 |
| Yuba County | Urban | 7.4 | 3,967 | 2,827 |
| San Bernardino County | Urban | 8.5 | 120,998 | 2,921 |
| Riverside County | Urban | 8.8 | 144,835 | 2,945 |
| Ventura County | Urban | 8.8 | 50,991 | 2,945 |
| Napa County | Urban | 9.6 | 9,386 | 2,983 |
| San Benito County | Urban | 9.9 | 4,395 | 2,994 |
| Sutter County | Urban | 11.1 | 7,260 | 3,029 |
| Stanislaus County | Urban | 11.2 | 39,845 | 3,032 |
| San Joaquin County | Urban | 11.3 | 57,821 | 3,035 |
| Santa Barbara County | Urban | 11.5 | 32,098 | 3,046 |
| Los Angeles County | Urban | 11.6 | 802,055 | 3,047 |
| Fresno County | Urban | 11.8 | 75,176 | 3,049 |
| Kern County | Urban | 12.9 | 72,659 | 3,067 |
| Kings County | Urban | 13.1 | 12,625 | 3,070 |
| Glenn County | Rural | 13.3 | 2,442 | 3,073 |
| Imperial County | Urban | 14.4 | 16,074 | 3,094 |
| Madera County | Urban | 15.9 | 16,086 | 3,106 |
| Tulare County | Urban | 16.0 | 46,008 | 3,107 |
| Monterey County | Urban | 16.8 | 47,318 | 3,115 |
| Colusa County | Rural | 17.0 | 2,388 | 3,118 |
| Merced County | Urban | 17.3 | 30,085 | 3,122 |
Notes:
Created by statecancerprofiles.cancer.gov on 03/19/2026 7:11 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 Education: Less than 9th grade, see the dictionary.
Data for United States does not include Puerto Rico.