Data / Rankings / Population aged 65 and over / Counties in Colorado

Counties in Colorado by share of population aged 65 and over, 2025

Hinsdale County had the highest share of population aged 65 and over of 64 counties in 2025, at 38.2%. Adams County had the lowest, at 12.5%. The median was 22.1% and the figure for Colorado was 17.1%. Source: the U.S. Census Bureau.

Highest38.2Hinsdale County
Lowest12.5Adams County
Median22.164 counties
Colorado17.1History

Top 40 counties, 2025

CSVChart (SVG)

Hinsdale CountyHinsdale County: 38.2 %38.2Mineral CountyMineral County: 37.6 %37.6Custer CountyCuster County: 36.3 %36.3Huerfano CountyHuerfano County: 36 %36Ouray CountyOuray County: 35.3 %35.3Archuleta CountyArchuleta County: 31.5 %31.5Sedgwick CountySedgwick County: 31.2 %31.2Costilla CountyCostilla County: 31.1 %31.1Jackson CountyJackson County: 30.9 %30.9Delta CountyDelta County: 29.9 %29.9Las Animas CountyLas Animas County: 29 %29Teller CountyTeller County: 28.7 %28.7Chaffee CountyChaffee County: 28 %28Saguache CountySaguache County: 27.9 %27.9Montrose CountyMontrose County: 27.5 %27.5Clear Creek CountyClear Creek County: 27.3 %27.3Kiowa CountyKiowa County: 26.8 %26.8Baca CountyBaca County: 26.4 %26.4Montezuma CountyMontezuma County: 26.3 %26.3Rio Grande CountyRio Grande County: 26.1 %26.1Park CountyPark County: 25.9 %25.9Dolores CountyDolores County: 25.8 %25.8Fremont CountyFremont County: 25.6 %25.6Cheyenne CountyCheyenne County: 24.4 %24.4Washington CountyWashington County: 24.3 %24.3La Plata CountyLa Plata County: 23.8 %23.8Otero CountyOtero County: 23.7 %23.7Mesa CountyMesa County: 23.5 %23.5Conejos CountyConejos County: 23.2 %23.2Gilpin CountyGilpin County: 22.7 %22.7Pitkin CountyPitkin County: 22.3 %22.3Rio Blanco CountyRio Blanco County: 22.1 %22.1Phillips CountyPhillips County: 22.1 %22.1Pueblo CountyPueblo County: 21.8 %21.8Grand CountyGrand County: 21.8 %21.8Logan CountyLogan County: 21.4 %21.4Kit Carson CountyKit Carson County: 21.1 %21.1Elbert CountyElbert County: 20.6 %20.6San Juan CountySan Juan County: 20.4 %20.4Routt CountyRoutt County: 20.3 %20.3
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2025 (%)Change on 2024
1Hinsdale County38.2-0.4 pts
2Mineral County37.6+1.3 pts
3Custer County36.3+1.3 pts
4Huerfano County36+0.8 pts
5Ouray County35.3+0.9 pts
6Archuleta County31.5+0.3 pts
7Sedgwick County31.2-0.2 pts
8Costilla County31.1+1 pts
9Jackson County30.9+2.1 pts
10Delta County29.9+0.7 pts
11Las Animas County29+1.1 pts
12Teller County28.7+0.8 pts
13Chaffee County28+0.6 pts
14Saguache County27.9+0.9 pts
15Montrose County27.5+0.6 pts
16Clear Creek County27.3+1.5 pts
17Kiowa County26.8+0.7 pts
18Baca County26.4+0.5 pts
19Montezuma County26.3+0.5 pts
20Rio Grande County26.1+0.6 pts
21Park County25.9+1.2 pts
22Dolores County25.8+0.3 pts
23Fremont County25.6+0.6 pts
24Cheyenne County24.4+0.6 pts
25Washington County24.3+0.2 pts
26La Plata County23.8+0.8 pts
27Otero County23.7+0.6 pts
28Mesa County23.5+0.5 pts
29Conejos County23.2+0.4 pts
30Gilpin County22.7+0.6 pts
31Pitkin County22.3+0.5 pts
32Rio Blanco County22.1+0.9 pts
33Phillips County22.1+0.6 pts
34Pueblo County21.8+0.5 pts
35Grand County21.8+0.2 pts
36Logan County21.4+0.4 pts
37Kit Carson County21.1+0.1 pts
38Elbert County20.6+0.3 pts
39San Juan County20.4-1.4 pts
40Routt County20.3+0.6 pts
41Bent County19.9+0.3 pts
42Jefferson County19.9+0.5 pts
43Larimer County19.8+0.5 pts
44Yuma County19.7+0.2 pts
45Moffat County19.5+0.9 pts
46Prowers County19.5+0.3 pts
47Lincoln County19.1-0.1 pts
48Boulder County18.8+0.6 pts
49Crowley County18.5+0.9 pts
50San Miguel County18.5+1 pts
51Alamosa County17.8+0.2 pts
52Morgan County17.8+0.4 pts
53Broomfield County17.1+0.5 pts
54Gunnison County16.6+0.3 pts
55Garfield County16.3+0.7 pts
56Douglas County15.9+0.6 pts
57El Paso County15.8+0.4 pts
58Summit County15.8+0.6 pts
59Eagle County15.6+0.7 pts
60Arapahoe County15.6+0.4 pts
61Lake County14.7+0.1 pts
62Weld County13.9+0.4 pts
63Denver County12.8+0.2 pts
64Adams County12.5+0.3 pts

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Colorado by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"Colorado","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=Colorado&limit=10

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Questions

Which county has the highest share of population aged 65 and over?

Hinsdale County, with 38.2% in 2025, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Adams County, with 12.5% in 2025.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

Counties in Colorado: more rankings