Demographics Table
Demographic Data Report for Colorado by County
Population: Age 40 and over
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 (Age 40 And Over)
|
Rank within US (of 3143 counties) 
|
|---|---|---|---|---|
| Colorado | N/A | 46.6 | 2,730,494 | 43 of 52 |
| United States | N/A | 48.5 | 162,458,898 | N/A |
| Alamosa County | Rural | 38.9 | 6,450 | 3,058 |
| Denver County | Urban | 40.9 | 293,962 | 2,995 |
| Adams County | Urban | 41.7 | 220,885 | 2,954 |
| El Paso County | Urban | 42.7 | 317,607 | 2,917 |
| Weld County | Urban | 43.0 | 150,832 | 2,906 |
| Lake County | Rural | 45.5 | 3,360 | 2,724 |
| San Juan County | Rural | 45.9 | 332 | 2,680 |
| Arapahoe County | Urban | 46.0 | 303,533 | 2,666 |
| Larimer County | Urban | 46.0 | 169,067 | 2,666 |
| Garfield County | Rural | 46.4 | 28,971 | 2,628 |
| Rio Blanco County | Rural | 46.5 | 3,042 | 2,614 |
| Morgan County | Rural | 46.9 | 13,856 | 2,568 |
| Boulder County | Urban | 47.2 | 155,225 | 2,527 |
| Gunnison County | Rural | 47.2 | 8,140 | 2,527 |
| Broomfield County | Urban | 48.2 | 36,790 | 2,389 |
| Logan County | Rural | 48.8 | 10,198 | 2,287 |
| Kit Carson County | Rural | 49.2 | 3,452 | 2,214 |
| Prowers County | Rural | 49.2 | 5,864 | 2,214 |
| Eagle County | Rural | 49.3 | 27,202 | 2,185 |
| Summit County | Rural | 49.3 | 15,281 | 2,185 |
| Douglas County | Urban | 49.4 | 186,182 | 2,164 |
| Moffat County | Rural | 50.2 | 6,624 | 1,983 |
| Pueblo County | Urban | 50.6 | 85,685 | 1,884 |
| Jefferson County | Urban | 50.7 | 293,768 | 1,858 |
| Yuma County | Rural | 50.7 | 5,061 | 1,858 |
| Conejos County | Rural | 50.8 | 3,829 | 1,836 |
| Bent County | Rural | 50.9 | 2,823 | 1,816 |
| Crowley County | Rural | 50.9 | 2,872 | 1,816 |
| Washington County | Rural | 51.4 | 2,482 | 1,691 |
| Otero County | Rural | 51.8 | 9,496 | 1,593 |
| Mesa County | Urban | 52.0 | 82,451 | 1,544 |
| Phillips County | Rural | 52.3 | 2,352 | 1,461 |
| Lincoln County | Rural | 52.9 | 2,934 | 1,302 |
| Sedgwick County | Rural | 53.1 | 1,223 | 1,267 |
| Rio Grande County | Rural | 53.5 | 6,057 | 1,177 |
| Baca County | Rural | 54.2 | 1,857 | 1,019 |
| La Plata County | Rural | 54.7 | 30,822 | 909 |
| Routt County | Rural | 55.4 | 13,891 | 781 |
| Montezuma County | Rural | 56.2 | 14,844 | 652 |
| Cheyenne County | Rural | 56.3 | 981 | 638 |
| Elbert County | Urban | 56.3 | 15,694 | 638 |
| Fremont County | Rural | 56.5 | 28,066 | 619 |
| San Miguel County | Rural | 56.7 | 4,514 | 595 |
| Las Animas County | Rural | 56.8 | 8,187 | 587 |
| Grand County | Rural | 57.0 | 9,065 | 566 |
| Montrose County | Rural | 57.1 | 25,011 | 553 |
| Kiowa County | Rural | 57.3 | 788 | 527 |
| Hinsdale County | Rural | 58.0 | 583 | 446 |
| Pitkin County | Rural | 59.3 | 10,065 | 330 |
| Saguache County | Rural | 59.5 | 3,913 | 306 |
| Delta County | Rural | 59.8 | 18,900 | 285 |
| Costilla County | Rural | 59.9 | 2,160 | 276 |
| Chaffee County | Rural | 61.7 | 12,453 | 184 |
| Clear Creek County | Urban | 63.0 | 5,837 | 135 |
| Archuleta County | Rural | 63.3 | 8,798 | 125 |
| Gilpin County | Urban | 63.3 | 3,736 | 125 |
| Teller County | Urban | 63.5 | 15,766 | 115 |
| Jackson County | Rural | 63.9 | 877 | 106 |
| Park County | Urban | 64.8 | 11,602 | 79 |
| Huerfano County | Rural | 67.0 | 4,673 | 46 |
| Mineral County | Rural | 69.3 | 505 | 26 |
| Custer County | Rural | 70.3 | 3,687 | 17 |
| Ouray County | Rural | 70.7 | 3,595 | 16 |
| Dolores County | Rural | 71.4 | 1,736 | 12 |
Notes:
Created by statecancerprofiles.cancer.gov on 03/25/2026 10:47 am.
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 Population: Age 40 and over, see the dictionary.
Data for United States does not include Puerto Rico.