RANKING · 1990 CENSUS · 63 SHOWN OF 63

Largest senior population, Colorado counties · 1990

Colorado counties home to the most residents aged 65 and over as of 1990. Ranked by number of people, not the senior share. This list covers the 63 counties in Colorado that qualify, ranked against each other statewide.

ColoradoAll states All rankings

SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPRESIDENTS 65 AND OVERVS –

01Denver County, COCO740,61364,152–

02Jefferson County, COCO580,45135,637–

03El Paso County, COCO757,04031,674–

04Arapahoe County, COCO673,82029,033–

05Adams County, COCO554,66820,161–

06Pueblo County, COCO169,27718,568–

07Larimer County, COCO377,29217,939–

08Boulder County, COCO328,56017,048–

09Mesa County, COCO162,84513,408–

10Weld County, COCO378,42613,285–

11Fremont County, COCO50,0396,053–

12Delta County, COCO32,1784,670–

13Montrose County, COCO44,5913,995–

14Otero County, COCO17,6833,400–

15Morgan County, COCO30,3063,336–

16La Plata County, COCO56,8983,188–

17Garfield County, COCO63,4742,974–

18Las Animas County, COCO14,3912,790–

19Logan County, COCO20,6542,702–

20Douglas County, COCO399,3962,503–

21Montezuma County, COCO26,6782,298–

22Chaffee County, COCO20,8312,111–

23Prowers County, COCO11,8841,673–

24Rio Grande County, COCO11,0871,557–

25Yuma County, COCO9,8961,505–

26Alamosa County, COCO16,6881,261–

27Huerfano County, COCO7,0111,251–

28Kit Carson County, COCO7,0691,151–

29Conejos County, COCO7,5291,042–

30Bent County, COCO5,716956–

31Baca County, COCO3,347941–

32Moffat County, COCO13,122935–

33Teller County, COCO24,756902–

34Lincoln County, COCO5,645882–

35Phillips County, COCO4,420879–

36Washington County, COCO4,732849–

37Routt County, COCO25,329808–

38Elbert County, COCO30,534764–

39Eagle County, COCO54,291709–

40Gunnison County, COCO17,439657–

41Sedgwick County, COCO2,247620–

42Archuleta County, COCO14,306616–

43Grand County, COCO16,496611–

44Saguache County, COCO6,732575–

45Crowley County, COCO5,677573–

46Rio Blanco County, COCO6,683565–

47Pitkin County, COCO16,625557–

48Clear Creek County, COCO8,994544–

49Park County, COCO18,314531–

50Costilla County, COCO3,679521–

51Lake County, COCO7,552486–

52Cheyenne County, COCO1,713376–

53Kiowa County, COCO1,412332–

54Ouray County, COCO5,265299–

55Custer County, COCO5,590284–

56Summit County, COCO31,517283–

57Dolores County, COCO2,466220–

58Gilpin County, COCO6,073220–

59Jackson County, COCO1,211172–

60San Miguel County, COCO7,753158–

61Mineral County, COCO91084–

62Hinsdale County, COCO75359–

63San Juan County, COCO81333–

SHOWING 1–63 OF 63

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