RANKING · 2010 CENSUS · 64 SHOWN OF 64

Largest senior population, Colorado counties · 2010

Colorado counties home to the most residents aged 65 and over as of 2010. Ranked by number of people, not the senior share. This list covers the 64 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 2000

01Jefferson County, COCO580,45167,411+33%

02Denver County, COCO740,61362,132−0%

03El Paso County, COCO757,04062,051+39%

04Arapahoe County, COCO673,82057,580+37%

05Adams County, COCO554,66836,862+30%

06Larimer County, COCO377,29235,541+48%

07Boulder County, COCO328,56029,521+30%

08Pueblo County, COCO169,27724,346+13%

09Weld County, COCO378,42624,235+49%

10Mesa County, COCO162,84521,872+24%

11Douglas County, COCO399,39620,343+178%

12Fremont County, COCO50,0398,244+23%

13Montrose County, COCO44,5917,349+44%

14Delta County, COCO32,1786,239+14%

15La Plata County, COCO56,8985,979+45%

16Broomfield County, COCO79,1745,508–

17Garfield County, COCO63,4744,717+23%

18Montezuma County, COCO26,6784,269+29%

19Morgan County, COCO30,3063,965+12%

20Chaffee County, COCO20,8313,523+28%

21Otero County, COCO17,6833,458+3%

22Logan County, COCO20,6543,321+12%

23Teller County, COCO24,7563,023+96%

24Eagle County, COCO54,2912,938+135%

25Las Animas County, COCO14,3912,748+1%

26Elbert County, COCO30,5342,193+84%

27Summit County, COCO31,5172,158+180%

28Archuleta County, COCO14,3062,116+80%

29Pitkin County, COCO16,6251,964+94%

30Rio Grande County, COCO11,0871,945+7%

31Routt County, COCO25,3291,909+92%

32Park County, COCO18,3141,881+78%

33Prowers County, COCO11,8841,835+0%

34Alamosa County, COCO16,6881,752+22%

35Huerfano County, COCO7,0111,689+26%

36Yuma County, COCO9,8961,623+1%

37Grand County, COCO16,4961,519+57%

38Moffat County, COCO13,1221,454+18%

39Gunnison County, COCO17,4391,351+40%

40Kit Carson County, COCO7,0691,322+13%

41Conejos County, COCO7,5291,254−0%

42Clear Creek County, COCO8,9941,132+72%

43Custer County, COCO5,590954+85%

44Washington County, COCO4,732928+3%

45Phillips County, COCO4,420919+6%

46Lincoln County, COCO5,645918+6%

47Baca County, COCO3,347911−10%

48Saguache County, COCO6,732893+39%

49Bent County, COCO5,716888−7%

50Rio Blanco County, COCO6,683827+24%

51Costilla County, COCO3,679807+31%

52Ouray County, COCO5,265777+70%

53Lake County, COCO7,552647+26%

54Crowley County, COCO5,677614+3%

55Sedgwick County, COCO2,247569−6%

56San Miguel County, COCO7,753517+133%

57Gilpin County, COCO6,073514+90%

58Dolores County, COCO2,466388+23%

59Cheyenne County, COCO1,713328−11%

60Kiowa County, COCO1,412300+5%

61Jackson County, COCO1,211257+25%

62Mineral County, COCO910164+14%

63Hinsdale County, COCO753147+60%

64San Juan County, COCO81386+121%

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