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. The median across all 64 is 3,325. Biggest climber in the top 100 since 2020: Lake County, CO, up 5 places to #49.

ColoradoAll states All rankings

SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPRESIDENTS 65 AND OVERVS 2000

01▲1El Paso County, COCO757,040104,287+133%

02▼1Jefferson 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%

10▲1Mesa County, COCO162,84533,412+89%

11▼1Pueblo County, COCO169,27733,407+56%

12▲2Broomfield County, COCO79,17411,901–

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

14▲1Montrose County, COCO44,59111,400+124%

15▼3Fremont County, COCO50,03911,371+69%

16▲1Garfield County, COCO63,4749,222+140%

17▼1Delta 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%

22▲1Elbert County, COCO30,5345,246+340%

23▲2Summit County, COCO31,5174,874+533%

24▼2Morgan County, COCO30,3064,736+34%

25▼1Routt County, COCO25,3294,637+367%

26▲4Park County, COCO18,3144,262+302%

27▲1Archuleta County, COCO14,3063,997+239%

28▼1Logan County, COCO20,6543,992+35%

29▼3Otero County, COCO17,6833,894+17%

30▲1Pitkin County, COCO16,6253,875+283%

31▼2Las Animas County, COCO14,3913,751+37%

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

33▲2Gunnison County, COCO17,4392,603+170%

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

35▼2Alamosa County, COCO16,6882,507+74%

36▲1Huerfano County, COCO7,0112,424+81%

37▼1Prowers County, COCO11,8842,241+22%

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

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

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

41▲3Ouray County, COCO5,2651,820+298%

42▲1Saguache County, COCO6,7321,754+174%

43▼1Custer County, COCO5,5901,738+236%

44▼3Conejos County, COCO7,5291,549+23%

45▲2San Miguel County, COCO7,7531,481+567%

46▼1Kit Carson County, COCO7,0691,394+19%

47▲1Gilpin County, COCO6,0731,315+387%

48▼2Rio Blanco County, COCO6,6831,143+71%

49▲5Lake County, COCO7,5521,116+118%

50▼1Washington County, COCO4,7321,086+21%

51▼1Bent County, COCO5,7161,048+10%

52▼1Costilla County, COCO3,6791,029+67%

53▼1Lincoln County, COCO5,6451,014+17%

54▼1Phillips County, COCO4,420924+7%

55▲1Baca County, COCO3,347884−13%

56▼1Crowley County, COCO5,677874+46%

57▲1Dolores County, COCO2,466777+146%

58▼1Sedgwick County, COCO2,247557−8%

59▲1Jackson County, COCO1,211447+117%

60▼1Cheyenne County, COCO1,713342−8%

61▲2Hinsdale County, COCO753311+238%

62▼1Kiowa County, COCO1,412303+6%

63▼1Mineral County, COCO910238+65%

64San Juan County, COCO813134+244%

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES