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

Counties in Colorado by share of population aged 65 and over

Hinsdale County had the highest share of population aged 65 and over of 64 counties in 2024, at 38.6%. Adams County had the lowest, at 12.2%. The median was 21.7% and the figure for Colorado was 16.7%. Source: the U.S. Census Bureau.

Highest38.6Hinsdale County
Lowest12.2Adams County
Median21.764 counties
Colorado16.7History

Top 40 counties, 2024

CSVChart (SVG)

Hinsdale CountyHinsdale County: 38.6 %38.6Mineral CountyMineral County: 36.3 %36.3Huerfano CountyHuerfano County: 35.2 %35.2Custer CountyCuster County: 35 %35Ouray CountyOuray County: 34.4 %34.4Sedgwick CountySedgwick County: 31.4 %31.4Archuleta CountyArchuleta County: 31.2 %31.2Costilla CountyCostilla County: 30.2 %30.2Delta CountyDelta County: 29.2 %29.2Jackson CountyJackson County: 28.8 %28.8Las Animas CountyLas Animas County: 28 %28Teller CountyTeller County: 27.9 %27.9Chaffee CountyChaffee County: 27.4 %27.4Saguache CountySaguache County: 27 %27Montrose CountyMontrose County: 26.8 %26.8Kiowa CountyKiowa County: 26.1 %26.1Baca CountyBaca County: 25.9 %25.9Clear Creek CountyClear Creek County: 25.9 %25.9Montezuma CountyMontezuma County: 25.8 %25.8Rio Grande CountyRio Grande County: 25.6 %25.6Dolores CountyDolores County: 25.5 %25.5Fremont CountyFremont County: 25 %25Park CountyPark County: 24.7 %24.7Washington CountyWashington County: 24.1 %24.1Cheyenne CountyCheyenne County: 23.8 %23.8Otero CountyOtero County: 23.1 %23.1Mesa CountyMesa County: 23 %23La Plata CountyLa Plata County: 23 %23Conejos CountyConejos County: 22.8 %22.8Gilpin CountyGilpin County: 22.1 %22.1San Juan CountySan Juan County: 21.8 %21.8Pitkin CountyPitkin County: 21.8 %21.8Grand CountyGrand County: 21.6 %21.6Phillips CountyPhillips County: 21.5 %21.5Pueblo CountyPueblo County: 21.3 %21.3Rio Blanco CountyRio Blanco County: 21.2 %21.2Kit Carson CountyKit Carson County: 21 %21Logan CountyLogan County: 21 %21Elbert CountyElbert County: 20.3 %20.3Routt CountyRoutt County: 19.7 %19.7
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2024 (%)Change on 2023
1Hinsdale County38.6+1.1 pts
2Mineral County36.3+0.1 pts
3Huerfano County35.2+1.5 pts
4Custer County35+1.8 pts
5Ouray County34.4+1.6 pts
6Sedgwick County31.4+0.7 pts
7Archuleta County31.2+0.9 pts
8Costilla County30.2+0.6 pts
9Delta County29.2+0.1 pts
10Jackson County28.8+1.3 pts
11Las Animas County28+0.8 pts
12Teller County27.9+0.6 pts
13Chaffee County27.4+0.2 pts
14Saguache County27+1.3 pts
15Montrose County26.8+0.4 pts
16Kiowa County26.1+0.8 pts
17Baca County25.9-0.1 pts
18Clear Creek County25.9+1.6 pts
19Montezuma County25.8+0.4 pts
20Rio Grande County25.6+0.7 pts
21Dolores County25.5+1.2 pts
22Fremont County25+0.7 pts
23Park County24.7+0.9 pts
24Washington County24.1+0.6 pts
25Cheyenne County23.8+0.9 pts
26Otero County23.1+0.4 pts
27Mesa County23+0.5 pts
28La Plata County23+0.6 pts
29Conejos County22.8+0.6 pts
30Gilpin County22.1+0.9 pts
31San Juan County21.8-1.1 pts
32Pitkin County21.8+0.4 pts
33Grand County21.6+0.4 pts
34Phillips County21.5+0.1 pts
35Pueblo County21.3+0.4 pts
36Rio Blanco County21.2+0.3 pts
37Kit Carson County21+0.2 pts
38Logan County21+0.3 pts
39Elbert County20.3+0.5 pts
40Routt County19.7+0.5 pts
41Bent County19.6+0.6 pts
42Yuma County19.5+0.2 pts
43Jefferson County19.4+0.4 pts
44Larimer County19.3+0.5 pts
45Lincoln County19.2-0 pts
46Prowers County19.1+0.1 pts
47Moffat County18.5+0.7 pts
48Boulder County18.2+0.5 pts
49Crowley County17.7+0.9 pts
50Alamosa County17.6+0.4 pts
51San Miguel County17.5+0.7 pts
52Morgan County17.4+0.2 pts
53Broomfield County16.6+0.4 pts
54Gunnison County16.3+0.2 pts
55Garfield County15.6+0.5 pts
56El Paso County15.3+0.4 pts
57Douglas County15.3+0.5 pts
58Summit County15.2+0.4 pts
59Arapahoe County15.1+0.2 pts
60Eagle County14.9+0.7 pts
61Lake County14.6+0.2 pts
62Weld County13.5+0.3 pts
63Denver County12.60 pts
64Adams County12.2+0.2 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 38.6% in 2024, according to the U.S. Census Bureau.

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

Adams County, with 12.2% in 2024.

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