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Demographics Table

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Demographic Data Report for Colorado 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
 sort alphabetically by name ascending
2023 Rural-Urban Continuum Codes Φ
 sort by rural urban descending
Value (Percent)
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People (Education: Less Than 9th Grade)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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United States N/A 4.7 10,803,193 N/A
Colorado N/A 3.1 126,229 20 of 52
Yuma County Rural 11.2 734 3,032
Prowers County Rural 7.7 587 2,854
Crowley County Rural 7.5 329 2,833
Morgan County Rural 7.3 1,429 2,815
Adams County Urban 6.9 24,138 2,772
Garfield County Rural 6.6 2,765 2,718
Baca County Rural 6.1 153 2,615
Alamosa County Rural 5.8 589 2,544
Weld County Urban 5.7 13,045 2,519
Bent County Rural 5.3 226 2,423
Rio Grande County Rural 4.9 401 2,274
Conejos County Rural 4.5 232 2,134
Denver County Urban 4.4 23,406 2,099
Cheyenne County Rural 4.0 51 1,921
Montrose County Rural 4.0 1,276 1,921
Arapahoe County Urban 3.9 17,959 1,874
Huerfano County Rural 3.7 204 1,776
Las Animas County Rural 3.6 390 1,701
Logan County Rural 3.4 511 1,593
Otero County Rural 3.4 430 1,593
Kit Carson County Rural 3.2 153 1,475
Montezuma County Rural 3.1 600 1,405
Washington County Rural 3.1 108 1,405
Lake County Rural 3.0 155 1,338
Pueblo County Urban 2.8 3,342 1,194
Costilla County Rural 2.7 74 1,124
Fremont County Rural 2.7 1,042 1,124
Phillips County Rural 2.7 84 1,124
Delta County Rural 2.6 599 1,042
Jackson County Rural 2.4 26 889
Rio Blanco County Rural 2.4 106 889
Saguache County Rural 2.4 124 889
Boulder County Urban 2.0 4,422 603
Clear Creek County Urban 2.0 147 603
Lincoln County Rural 2.0 83 603
El Paso County Urban 1.9 9,242 548
Elbert County Urban 1.9 384 548
Eagle County Rural 1.7 687 443
Dolores County Rural 1.6 33 364
Grand County Rural 1.6 195 364
Mesa County Urban 1.6 1,855 364
Pitkin County Rural 1.6 217 364
Summit County Rural 1.6 385 364
Archuleta County Rural 1.4 156 242
Gilpin County Urban 1.4 65 242
Moffat County Rural 1.4 129 242
Ouray County Rural 1.4 61 242
Jefferson County Urban 1.3 5,492 198
Larimer County Urban 1.3 3,162 198
Chaffee County Rural 1.2 191 163
Custer County Rural 1.1 45 132
Gunnison County Rural 1.1 125 132
Broomfield County Urban 1.0 571 92
Douglas County Urban 1.0 2,485 92
La Plata County Rural 1.0 430 92
Routt County Rural 0.9 169 67
Kiowa County Rural 0.7 7 39
Sedgwick County Rural 0.7 11 39
Teller County Urban 0.7 140 39
Park County Urban 0.5 72 21
Hinsdale County Rural 0.0 0 1
Mineral County Rural 0.0 0 1
San Juan County Rural 0.0 0 1
San Miguel County Rural 0.0 0 1

Notes:
Created by statecancerprofiles.cancer.gov on 03/25/2026 1:15 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.

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