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Demographics Table

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Demographic Data Report for Colorado by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Value

County
 sort alphabetically by name ascending
2023 Rural-Urban Continuum Codes Φ
 sort by rural urban descending
Value (Percent)
 sort by value ascending
People (Age Under 18)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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United States N/A 22.2 73,645,238 N/A
Colorado N/A 21.4 1,240,882 35 of 52
Yuma County Rural 27.4 2,723 173
Morgan County Rural 26.2 7,638 259
Phillips County Rural 26.0 1,168 281
Kit Carson County Rural 25.9 1,816 299
Prowers County Rural 25.7 3,070 324
Weld County Urban 25.7 87,535 324
Adams County Urban 25.4 133,000 378
Conejos County Rural 25.4 1,914 378
Moffat County Rural 25.2 3,342 426
Garfield County Rural 24.9 15,464 492
Rio Blanco County Rural 24.5 1,594 572
Douglas County Urban 24.0 88,460 718
Alamosa County Rural 23.6 3,902 866
El Paso County Urban 23.4 172,420 947
Otero County Rural 23.4 4,315 947
Arapahoe County Urban 22.9 150,051 1,173
Cheyenne County Rural 22.8 395 1,209
Baca County Rural 22.3 772 1,429
Washington County Rural 22.3 1,078 1,429
Kiowa County Rural 22.2 301 1,469
Pueblo County Urban 22.0 37,145 1,567
Sedgwick County Rural 21.9 513 1,606
Broomfield County Urban 21.1 15,845 1,936
Elbert County Urban 21.1 5,728 1,936
Mesa County Urban 20.9 32,807 2,008
Montezuma County Rural 20.9 5,489 2,008
Eagle County Rural 20.8 11,520 2,044
Montrose County Rural 20.5 8,864 2,151
Rio Grande County Rural 20.4 2,323 2,187
Delta County Rural 19.3 6,051 2,489
Lake County Rural 19.3 1,431 2,489
Jackson County Rural 19.1 271 2,537
Jefferson County Urban 18.9 109,290 2,581
Costilla County Rural 18.8 670 2,608
Larimer County Urban 18.7 67,996 2,629
Saguache County Rural 18.5 1,207 2,670
Denver County Urban 18.3 130,820 2,702
Las Animas County Rural 18.3 2,628 2,702
Logan County Rural 18.3 3,849 2,702
Boulder County Urban 18.0 59,132 2,761
La Plata County Rural 17.9 10,054 2,778
Lincoln County Rural 17.7 982 2,816
Routt County Rural 17.5 4,380 2,844
Archuleta County Rural 17.2 2,366 2,882
Summit County Rural 16.4 5,064 2,956
Bent County Rural 16.2 894 2,976
Grand County Rural 16.1 2,540 2,984
Fremont County Rural 16.0 7,917 2,988
Huerfano County Rural 16.0 1,112 2,988
San Miguel County Rural 16.0 1,284 2,988
Teller County Urban 16.0 3,970 2,988
Gilpin County Urban 15.7 924 3,014
Gunnison County Rural 15.7 2,692 3,014
Pitkin County Rural 15.0 2,560 3,058
Park County Urban 14.7 2,605 3,070
Chaffee County Rural 14.6 2,895 3,075
Custer County Rural 14.4 731 3,081
Clear Creek County Urban 14.2 1,327 3,086
Dolores County Rural 14.0 335 3,092
Hinsdale County Rural 13.6 128 3,102
Crowley County Rural 13.5 774 3,104
Ouray County Rural 12.6 633 3,115
Mineral County Rural 12.5 100 3,116
San Juan County Rural 11.3 78 3,128
Notes:
Created by statecancerprofiles.cancer.gov on 07/09/2025 10:42 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.

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