Data / Rankings / Median age / Counties in Colorado

Counties in Colorado by median age

Dolores County had the highest median age of 64 counties in 2022, at 59.2 years. Alamosa County had the lowest, at 32.2 years. The median was 41.3 years and the figure for Colorado was 37.3 years. Source: the U.S. Census Bureau.

Highest59.2Dolores County
Lowest32.2Alamosa County
Median41.364 counties
Colorado37.3History

Top 40 counties, 2022

CSVChart (SVG)

Dolores CountyDolores County: 59.2 years59.2Custer CountyCuster County: 58.1 years58.1Hinsdale CountyHinsdale County: 56.9 years56.9Ouray CountyOuray County: 56.8 years56.8Huerfano CountyHuerfano County: 55.4 years55.4Mineral CountyMineral County: 54.7 years54.7Costilla CountyCostilla County: 52.8 years52.8Jackson CountyJackson County: 51.5 years51.5Park CountyPark County: 51.3 years51.3Teller CountyTeller County: 51.1 years51.1Archuleta CountyArchuleta County: 50.8 years50.8Saguache CountySaguache County: 49.9 years49.9Clear Creek CountyClear Creek County: 49.5 years49.5San Juan CountySan Juan County: 49.3 years49.3Chaffee CountyChaffee County: 47.8 years47.8Delta CountyDelta County: 47.8 years47.8Gilpin CountyGilpin County: 47.4 years47.4Las Animas CountyLas Animas County: 46.8 years46.8Pitkin CountyPitkin County: 46.7 years46.7Montrose CountyMontrose County: 45.9 years45.9Elbert CountyElbert County: 45.6 years45.6Fremont CountyFremont County: 44.9 years44.9Grand CountyGrand County: 44.6 years44.6Sedgwick CountySedgwick County: 44.5 years44.5Montezuma CountyMontezuma County: 43.7 years43.7Kiowa CountyKiowa County: 43.3 years43.3Cheyenne CountyCheyenne County: 43.2 years43.2Baca CountyBaca County: 42 years42Routt CountyRoutt County: 41.9 years41.9San Miguel CountySan Miguel County: 41.9 years41.9La Plata CountyLa Plata County: 41.8 years41.8Crowley CountyCrowley County: 41.3 years41.3Rio Grande CountyRio Grande County: 41.3 years41.3Bent CountyBent County: 40.7 years40.7Mesa CountyMesa County: 40.6 years40.6Phillips CountyPhillips County: 40.6 years40.6Otero CountyOtero County: 40.5 years40.5Lincoln CountyLincoln County: 40.4 years40.4Jefferson CountyJefferson County: 40.2 years40.2Washington CountyWashington County: 40.2 years40.2
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2022
years		Change on 2021
1Dolores County59.2+0.6
2Custer County58.1-0.9
3Hinsdale County56.90
4Ouray County56.8+2.4
5Huerfano County55.40
6Mineral County54.7+3.9
7Costilla County52.8+1.1
8Jackson County51.5-3.5
9Park County51.30
10Teller County51.1+0.7
11Archuleta County50.8+0.8
12Saguache County49.9+0.3
13Clear Creek County49.50
14San Juan County49.3+4.1
15Chaffee County47.8-1.2
15Delta County47.8+0.2
17Gilpin County47.4-1.8
18Las Animas County46.8+0.4
19Pitkin County46.7+0.8
20Montrose County45.9+0.3
21Elbert County45.6-0.6
22Fremont County44.9+0.1
23Grand County44.6+1
24Sedgwick County44.5+1
25Montezuma County43.7-1.3
26Kiowa County43.3+1.7
27Cheyenne County43.2+1.2
28Baca County42-1.2
29Routt County41.9+0.4
29San Miguel County41.9-0.2
31La Plata County41.8+0.5
32Crowley County41.3+3.8
32Rio Grande County41.3+0.6
34Bent County40.7-0.2
35Mesa County40.6+0.3
35Phillips County40.6+2.8
37Otero County40.5+0.4
38Lincoln County40.4+2
39Jefferson County40.20
39Washington County40.2-0.8
41Pueblo County39.8+0.3
42Yuma County39.6+1.5
43Douglas County39.3+0.2
44Kit Carson County39.2+0.3
44Rio Blanco County39.2+1.7
46Conejos County39.1+0.4
47Summit County39+0.4
48Logan County38.9+0.8
49Broomfield County38.6+0.2
50Eagle County38.3+0.5
51Prowers County37.8-0.1
52Garfield County37.2+0.4
53Arapahoe County37.1+0.1
53Moffat County37.1-0.3
55Boulder County37-0.2
56Morgan County36.9+0.8
57Lake County36.8+1.4
58Gunnison County36.4+0.3
59Larimer County36.30
60Weld County35+0.2
61Denver County34.9+0.1
62El Paso County34.7+0.1
63Adams County34.4+0.2
64Alamosa County32.2-0.7

Other periods

About this ranking

Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

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. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Dolores County, with 59.2 years in 2022, according to the U.S. Census Bureau.

Which county has the lowest median age?

Alamosa County, with 32.2 years in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in Colorado: more rankings