Interpretation of Demographics Data
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
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 4.7 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 10,803,193.
- Rank within US : N/A
California
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 8.7 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 2,364,237.
- Rank within US : This county is ranked 51 of 52
Alpine County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 0.7 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 8.
- Rank within US : This county is ranked 39 of 3143
Tuolumne County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 1.5 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 636.
- Rank within US : This county is ranked 309 of 3143
Nevada County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 1.6 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 1,294.
- Rank within US : This county is ranked 364 of 3143
Calaveras County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 1.7 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 597.
- Rank within US : This county is ranked 443 of 3143
El Dorado County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 1.8 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 2,539.
- Rank within US : This county is ranked 485 of 3143
Mariposa County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 1.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 252.
- Rank within US : This county is ranked 548 of 3143
Trinity County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 1.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 236.
- Rank within US : This county is ranked 548 of 3143
Placer County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 2.0 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 5,842.
- Rank within US : This county is ranked 603 of 3143
Inyo County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 2.3 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 316.
- Rank within US : This county is ranked 825 of 3143
Shasta County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 2.5 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 3,179.
- Rank within US : This county is ranked 975 of 3143
Amador County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 2.6 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 856.
- Rank within US : This county is ranked 1042 of 3143
Plumas County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 2.8 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 426.
- Rank within US : This county is ranked 1194 of 3143
Humboldt County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 2.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 2,653.
- Rank within US : This county is ranked 1273 of 3143
Siskiyou County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 2.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 940.
- Rank within US : This county is ranked 1273 of 3143
Sierra County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 3.0 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 62.
- Rank within US : This county is ranked 1338 of 3143
Butte County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 3.6 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 4,875.
- Rank within US : This county is ranked 1701 of 3143
San Luis Obispo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 3.7 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 7,059.
- Rank within US : This county is ranked 1776 of 3143
Del Norte County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 3.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 778.
- Rank within US : This county is ranked 1874 of 3143
Marin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 4.5 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 8,574.
- Rank within US : This county is ranked 2134 of 3143
Mono County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 4.8 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 488.
- Rank within US : This county is ranked 2249 of 3143
Lake County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 4.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 2,408.
- Rank within US : This county is ranked 2274 of 3143
Contra Costa County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 5.5 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 45,256.
- Rank within US : This county is ranked 2467 of 3143
Solano County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 5.7 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 18,025.
- Rank within US : This county is ranked 2519 of 3143
San Diego County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 5.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 135,422.
- Rank within US : This county is ranked 2571 of 3143
Modoc County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 6.0 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 388.
- Rank within US : This county is ranked 2585 of 3143
San Mateo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 6.0 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 32,628.
- Rank within US : This county is ranked 2585 of 3143
Sacramento County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 6.2 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 68,445.
- Rank within US : This county is ranked 2637 of 3143
Santa Clara County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 6.4 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 86,172.
- Rank within US : This county is ranked 2682 of 3143
Yolo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 6.4 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 8,333.
- Rank within US : This county is ranked 2682 of 3143
Alameda County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 6.5 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 78,103.
- Rank within US : This county is ranked 2706 of 3143
Sonoma County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 6.6 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 23,312.
- Rank within US : This county is ranked 2718 of 3143
Tehama County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 6.7 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 2,996.
- Rank within US : This county is ranked 2741 of 3143
Mendocino County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 6.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 4,521.
- Rank within US : This county is ranked 2772 of 3143
San Francisco County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 6.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 45,970.
- Rank within US : This county is ranked 2772 of 3143
Lassen County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 7.1 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 1,589.
- Rank within US : This county is ranked 2796 of 3143
Santa Cruz County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 7.1 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 12,763.
- Rank within US : This county is ranked 2796 of 3143
Orange County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 7.3 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 161,784.
- Rank within US : This county is ranked 2815 of 3143
Yuba County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 7.4 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 3,967.
- Rank within US : This county is ranked 2827 of 3143
San Bernardino County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 8.5 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 120,998.
- Rank within US : This county is ranked 2921 of 3143
Riverside County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 8.8 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 144,835.
- Rank within US : This county is ranked 2945 of 3143
Ventura County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 8.8 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 50,991.
- Rank within US : This county is ranked 2945 of 3143
Napa County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 9.6 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 9,386.
- Rank within US : This county is ranked 2983 of 3143
San Benito County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 9.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 4,395.
- Rank within US : This county is ranked 2994 of 3143
Sutter County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 11.1 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 7,260.
- Rank within US : This county is ranked 3029 of 3143
Stanislaus County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 11.2 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 39,845.
- Rank within US : This county is ranked 3032 of 3143
San Joaquin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 11.3 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 57,821.
- Rank within US : This county is ranked 3035 of 3143
Santa Barbara County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 11.5 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 32,098.
- Rank within US : This county is ranked 3046 of 3143
Los Angeles County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 11.6 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 802,055.
- Rank within US : This county is ranked 3047 of 3143
Fresno County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 11.8 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 75,176.
- Rank within US : This county is ranked 3049 of 3143
Kern County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 12.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 72,659.
- Rank within US : This county is ranked 3067 of 3143
Kings County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 13.1 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 12,625.
- Rank within US : This county is ranked 3070 of 3143
Glenn County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 13.3 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 2,442.
- Rank within US : This county is ranked 3073 of 3143
Imperial County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 14.4 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 16,074.
- Rank within US : This county is ranked 3094 of 3143
Madera County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 15.9 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 16,086.
- Rank within US : This county is ranked 3106 of 3143
Tulare County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 16.0 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 46,008.
- Rank within US : This county is ranked 3107 of 3143
Monterey County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 16.8 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 47,318.
- Rank within US : This county is ranked 3115 of 3143
Colusa County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 17.0 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 2,388.
- Rank within US : This county is ranked 3118 of 3143
Merced County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 17.3 percent.
- People (Education: Less Than 9th Grade) : The number of people (education: less than 9th grade) is 30,085.
- Rank within US : This county is ranked 3122 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 03/20/2026 7:08 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.