RANKING · 2000 CENSUS · 63 SHOWN OF 63

Youngest by median age, Colorado counties · 2000

Colorado counties with the youngest median age (2000 ACS). This list covers the 63 counties in Colorado that qualify, ranked against each other statewide. The median across all 63 is 37.4.

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SAME RANKING BYCities States Metros ZIP codes

RELATEDLargest foreign-born population Most residents with a disability Largest veteran population Most uninsured people Largest senior population Most unmarried people

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 1990

01Gunnison County, COCO17,43930.4+7%

02Lake County, COCO7,55230.5−2%

03Alamosa County, COCO16,68830.6+8%

04Summit County, COCO31,51730.80%

05Weld County, COCO378,42630.9+1%

06Eagle County, COCO54,29131.2+2%

07Adams County, COCO554,66831.4+2%

08Prowers County, COCO11,88432.4+1%

09El Paso County, COCO757,04033.0+9%

10Denver County, COCO740,61333.1−3%

11Larimer County, COCO377,29233.2+6%

12Boulder County, COCO328,56033.4+6%

13Morgan County, COCO30,30633.5+3%

14Douglas County, COCO399,39633.7+4%

15Conejos County, COCO7,52934.2+9%

16Garfield County, COCO63,47434.2+4%

17San Miguel County, COCO7,75334.2+3%

18Arapahoe County, COCO673,82034.5+6%

19Routt County, COCO25,32935.0+8%

20Moffat County, COCO13,12235.4+11%

21La Plata County, COCO56,89835.6+12%

22Logan County, COCO20,65436.5+5%

23Crowley County, COCO5,67736.6+7%

24Pueblo County, COCO169,27736.7+6%

25Jefferson County, COCO580,45136.8+10%

26Grand County, COCO16,49636.9+11%

27Saguache County, COCO6,73236.9+17%

28Elbert County, COCO30,53437.2+11%

29Bent County, COCO5,71637.3−9%

30Rio Grande County, COCO11,08737.3+10%

31Yuma County, COCO9,89637.3+4%

32Kit Carson County, COCO7,06937.4+7%

33Rio Blanco County, COCO6,68337.5+16%

34Otero County, COCO17,68337.7+8%

35Lincoln County, COCO5,64537.8+3%

36Cheyenne County, COCO1,71337.9+19%

37Montezuma County, COCO26,67838.0+13%

38Mesa County, COCO162,84538.1+10%

39Gilpin County, COCO6,07338.3+6%

40Pitkin County, COCO16,62538.4+10%

41Montrose County, COCO44,59138.8+4%

42Fremont County, COCO50,03938.8+3%

43Teller County, COCO24,75639.4+14%

44Kiowa County, COCO1,41239.7+7%

45Phillips County, COCO4,42039.8+3%

46Park County, COCO18,31440.0+12%

47Clear Creek County, COCO8,99440.2+12%

48Washington County, COCO4,73240.2+8%

49Jackson County, COCO1,21140.5+14%

50Archuleta County, COCO14,30640.8+15%

51Las Animas County, COCO14,39140.9+8%

52Huerfano County, COCO7,01141.7+6%

53Chaffee County, COCO20,83141.8+12%

54Costilla County, COCO3,67942.1+19%

55Delta County, COCO32,17842.3+3%

56Dolores County, COCO2,46642.4+16%

57Baca County, COCO3,34742.9+10%

58Sedgwick County, COCO2,24743.2+6%

59Ouray County, COCO5,26543.4+9%

60San Juan County, COCO81343.7+30%

61Hinsdale County, COCO75343.9+13%

62Custer County, COCO5,59044.9+14%

63Mineral County, COCO91045.0+20%

SHOWING 1–63 OF 63

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS