RANKING · 1990 CENSUS · 63 SHOWN OF 63

Youngest by median age, Colorado counties · 1990

Colorado counties with the youngest median age (1990 ACS). This list covers the 63 counties in Colorado that qualify, ranked against each other statewide.

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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 –

01Alamosa County, COCO16,68828.3–

02Gunnison County, COCO17,43928.4–

03El Paso County, COCO757,04030.3–

04Weld County, COCO378,42630.6–

05Eagle County, COCO54,29130.7–

06Summit County, COCO31,51730.9–

07Adams County, COCO554,66830.9–

08Lake County, COCO7,55231.0–

09Larimer County, COCO377,29231.2–

10Conejos County, COCO7,52931.3–

11Saguache County, COCO6,73231.5–

12Boulder County, COCO328,56031.6–

13Moffat County, COCO13,12231.8–

14La Plata County, COCO56,89831.8–

15Cheyenne County, COCO1,71331.9–

16Prowers County, COCO11,88432.2–

17Douglas County, COCO399,39632.3–

18Rio Blanco County, COCO6,68332.4–

19Arapahoe County, COCO673,82032.5–

20Routt County, COCO25,32932.6–

21Morgan County, COCO30,30632.6–

22Garfield County, COCO63,47432.9–

23Grand County, COCO16,49633.1–

24San Miguel County, COCO7,75333.2–

25Jefferson County, COCO580,45133.4–

26Elbert County, COCO30,53433.4–

27San Juan County, COCO81333.6–

28Rio Grande County, COCO11,08733.8–

29Montezuma County, COCO26,67833.8–

30Denver County, COCO740,61334.0–

31Crowley County, COCO5,67734.2–

32Teller County, COCO24,75634.6–

33Logan County, COCO20,65434.7–

34Pueblo County, COCO169,27734.7–

35Mesa County, COCO162,84534.7–

36Pitkin County, COCO16,62534.9–

37Otero County, COCO17,68335.0–

38Kit Carson County, COCO7,06935.0–

39Archuleta County, COCO14,30635.4–

40Costilla County, COCO3,67935.5–

41Jackson County, COCO1,21135.5–

42Park County, COCO18,31435.6–

43Clear Creek County, COCO8,99435.9–

44Yuma County, COCO9,89635.9–

45Gilpin County, COCO6,07336.2–

46Dolores County, COCO2,46636.4–

47Lincoln County, COCO5,64536.7–

48Kiowa County, COCO1,41236.9–

49Washington County, COCO4,73237.1–

50Montrose County, COCO44,59137.2–

51Chaffee County, COCO20,83137.4–

52Mineral County, COCO91037.6–

53Fremont County, COCO50,03937.8–

54Las Animas County, COCO14,39138.0–

55Phillips County, COCO4,42038.6–

56Hinsdale County, COCO75338.8–

57Baca County, COCO3,34739.1–

58Custer County, COCO5,59039.3–

59Huerfano County, COCO7,01139.5–

60Ouray County, COCO5,26539.8–

61Sedgwick County, COCO2,24740.8–

62Delta County, COCO32,17841.0–

63Bent County, COCO5,71641.2–

SHOWING 1–63 OF 63

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS