RANKING · 2024 ACS · 64 SHOWN OF 64

Largest senior population, Colorado counties

Colorado counties home to the most residents aged 65 and over as of 2024. 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

01El Paso County, COCO757,040104,287+133%

02Jefferson County, COCO580,451103,643+104%

03Arapahoe County, COCO673,82095,133+127%

04Denver County, COCO740,61389,711+44%

05Larimer County, COCO377,29263,764+165%

06Adams County, COCO554,66859,925+111%

07Boulder County, COCO328,56053,942+138%

08Douglas County, COCO399,39652,473+617%

09Weld County, COCO378,42645,353+179%

10Mesa County, COCO162,84533,412+89%

11Pueblo County, COCO169,27733,407+56%

12Broomfield County, COCO79,17411,901–

13La Plata County, COCO56,89811,728+184%

14Montrose County, COCO44,59111,400+124%

15Fremont County, COCO50,03911,371+69%

16Garfield County, COCO63,4749,222+140%

17Delta County, COCO32,1788,973+64%

18Eagle County, COCO54,2917,871+530%

19Montezuma County, COCO26,6786,599+100%

20Teller County, COCO24,7566,224+304%

21Chaffee County, COCO20,8315,307+92%

22Elbert County, COCO30,5345,246+340%

23Summit County, COCO31,5174,874+533%

24Morgan County, COCO30,3064,736+34%

25Routt County, COCO25,3294,637+367%

26Park County, COCO18,3144,262+302%

27Archuleta County, COCO14,3063,997+239%

28Logan County, COCO20,6543,992+35%

29Otero County, COCO17,6833,894+17%

30Pitkin County, COCO16,6253,875+283%

31Las Animas County, COCO14,3913,751+37%

32Grand County, COCO16,4963,325+243%

33Gunnison County, COCO17,4392,603+170%

34Rio Grande County, COCO11,0872,578+41%

35Alamosa County, COCO16,6882,507+74%

36Huerfano County, COCO7,0112,424+81%

37Prowers County, COCO11,8842,241+22%

38Moffat County, COCO13,1222,194+78%

39Clear Creek County, COCO8,9942,102+219%

40Yuma County, COCO9,8961,840+14%

41Ouray County, COCO5,2651,820+298%

42Saguache County, COCO6,7321,754+174%

43Custer County, COCO5,5901,738+236%

44Conejos County, COCO7,5291,549+23%

45San Miguel County, COCO7,7531,481+567%

46Kit Carson County, COCO7,0691,394+19%

47Gilpin County, COCO6,0731,315+387%

48Rio Blanco County, COCO6,6831,143+71%

49Lake County, COCO7,5521,116+118%

50Washington County, COCO4,7321,086+21%

51Bent County, COCO5,7161,048+10%

52Costilla County, COCO3,6791,029+67%

53Lincoln County, COCO5,6451,014+17%

54Phillips County, COCO4,420924+7%

55Baca County, COCO3,347884−13%

56Crowley County, COCO5,677874+46%

57Dolores County, COCO2,466777+146%

58Sedgwick County, COCO2,247557−8%

59Jackson County, COCO1,211447+117%

60Cheyenne County, COCO1,713342−8%

61Hinsdale County, COCO753311+238%

62Kiowa County, COCO1,412303+6%

63Mineral County, COCO910238+65%

64San Juan County, COCO813134+244%

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES