State Cancer Profiles

Interpretation of Demographics Data

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

Colorado

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Value (Percent) : The value is 46.6 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 2,730,494.
• Rank within US : This county is ranked 43 of 52

United States

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Value (Percent) : The value is 48.5 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 162,458,898.
• Rank within US : N/A

Alamosa County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 38.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 6,450.
• Rank within US : This county is ranked 3058 of 3143

Denver County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 40.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 293,962.
• Rank within US : This county is ranked 2995 of 3143

Adams County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 41.7 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 220,885.
• Rank within US : This county is ranked 2954 of 3143

El Paso County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 42.7 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 317,607.
• Rank within US : This county is ranked 2917 of 3143

Weld County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 43.0 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 150,832.
• Rank within US : This county is ranked 2906 of 3143

Lake County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 45.5 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 3,360.
• Rank within US : This county is ranked 2724 of 3143

San Juan County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 45.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 332.
• Rank within US : This county is ranked 2680 of 3143

Arapahoe County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 46.0 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 303,533.
• Rank within US : This county is ranked 2666 of 3143

Larimer County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 46.0 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 169,067.
• Rank within US : This county is ranked 2666 of 3143

Garfield County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 46.4 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 28,971.
• Rank within US : This county is ranked 2628 of 3143

Rio Blanco County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 46.5 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 3,042.
• Rank within US : This county is ranked 2614 of 3143

Morgan County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 46.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 13,856.
• Rank within US : This county is ranked 2568 of 3143

Boulder County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 47.2 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 155,225.
• Rank within US : This county is ranked 2527 of 3143

Gunnison County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 47.2 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 8,140.
• Rank within US : This county is ranked 2527 of 3143

Broomfield County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 48.2 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 36,790.
• Rank within US : This county is ranked 2389 of 3143

Logan County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 48.8 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 10,198.
• Rank within US : This county is ranked 2287 of 3143

Kit Carson County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 49.2 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 3,452.
• Rank within US : This county is ranked 2214 of 3143

Prowers County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 49.2 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 5,864.
• Rank within US : This county is ranked 2214 of 3143

Eagle County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 49.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 27,202.
• Rank within US : This county is ranked 2185 of 3143

Summit County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 49.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 15,281.
• Rank within US : This county is ranked 2185 of 3143

Douglas County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 49.4 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 186,182.
• Rank within US : This county is ranked 2164 of 3143

Moffat County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 50.2 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 6,624.
• Rank within US : This county is ranked 1983 of 3143

Pueblo County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 50.6 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 85,685.
• Rank within US : This county is ranked 1884 of 3143

Jefferson County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 50.7 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 293,768.
• Rank within US : This county is ranked 1858 of 3143

Yuma County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 50.7 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 5,061.
• Rank within US : This county is ranked 1858 of 3143

Conejos County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 50.8 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 3,829.
• Rank within US : This county is ranked 1836 of 3143

Bent County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 50.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 2,823.
• Rank within US : This county is ranked 1816 of 3143

Crowley County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 50.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 2,872.
• Rank within US : This county is ranked 1816 of 3143

Washington County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 51.4 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 2,482.
• Rank within US : This county is ranked 1691 of 3143

Otero County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 51.8 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 9,496.
• Rank within US : This county is ranked 1593 of 3143

Mesa County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 52.0 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 82,451.
• Rank within US : This county is ranked 1544 of 3143

Phillips County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 52.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 2,352.
• Rank within US : This county is ranked 1461 of 3143

Lincoln County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 52.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 2,934.
• Rank within US : This county is ranked 1302 of 3143

Sedgwick County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 53.1 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 1,223.
• Rank within US : This county is ranked 1267 of 3143

Rio Grande County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 53.5 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 6,057.
• Rank within US : This county is ranked 1177 of 3143

Baca County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 54.2 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 1,857.
• Rank within US : This county is ranked 1019 of 3143

La Plata County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 54.7 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 30,822.
• Rank within US : This county is ranked 909 of 3143

Routt County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 55.4 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 13,891.
• Rank within US : This county is ranked 781 of 3143

Montezuma County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 56.2 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 14,844.
• Rank within US : This county is ranked 652 of 3143

Cheyenne County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 56.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 981.
• Rank within US : This county is ranked 638 of 3143

Elbert County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 56.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 15,694.
• Rank within US : This county is ranked 638 of 3143

Fremont County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 56.5 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 28,066.
• Rank within US : This county is ranked 619 of 3143

San Miguel County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 56.7 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 4,514.
• Rank within US : This county is ranked 595 of 3143

Las Animas County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 56.8 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 8,187.
• Rank within US : This county is ranked 587 of 3143

Grand County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 57.0 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 9,065.
• Rank within US : This county is ranked 566 of 3143

Montrose County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 57.1 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 25,011.
• Rank within US : This county is ranked 553 of 3143

Kiowa County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 57.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 788.
• Rank within US : This county is ranked 527 of 3143

Hinsdale County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 58.0 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 583.
• Rank within US : This county is ranked 446 of 3143

Pitkin County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 59.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 10,065.
• Rank within US : This county is ranked 330 of 3143

Saguache County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 59.5 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 3,913.
• Rank within US : This county is ranked 306 of 3143

Delta County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 59.8 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 18,900.
• Rank within US : This county is ranked 285 of 3143

Costilla County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 59.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 2,160.
• Rank within US : This county is ranked 276 of 3143

Chaffee County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 61.7 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 12,453.
• Rank within US : This county is ranked 184 of 3143

Clear Creek County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 63.0 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 5,837.
• Rank within US : This county is ranked 135 of 3143

Archuleta County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 63.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 8,798.
• Rank within US : This county is ranked 125 of 3143

Gilpin County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 63.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 3,736.
• Rank within US : This county is ranked 125 of 3143

Teller County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 63.5 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 15,766.
• Rank within US : This county is ranked 115 of 3143

Jackson County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 63.9 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 877.
• Rank within US : This county is ranked 106 of 3143

Park County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 64.8 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 11,602.
• Rank within US : This county is ranked 79 of 3143

Huerfano County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 67.0 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 4,673.
• Rank within US : This county is ranked 46 of 3143

Mineral County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 69.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 505.
• Rank within US : This county is ranked 26 of 3143

Custer County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 70.3 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 3,687.
• Rank within US : This county is ranked 17 of 3143

Ouray County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 70.7 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 3,595.
• Rank within US : This county is ranked 16 of 3143

Dolores County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 71.4 percent.
• People (Age 40 And Over) : The number of people (age 40 and over) is 1,736.
• Rank within US : This county is ranked 12 of 3143

Notes:
Created by statecancerprofiles.cancer.gov on 03/22/2026 6:03 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 Population: Age 40 and over, see the dictionary.

Data for United States does not include Puerto Rico.