RANKING · 2000 CENSUS · 63 SHOWN OF 63

Most sparsely populated, Colorado counties · 2000

Colorado counties with the fewest residents per square mile (2023). This list covers the 63 counties in Colorado that qualify, ranked against each other statewide.

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YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Hinsdale County, COCO7531+0%

02Kiowa County, COCO1,4121+0%

03Mineral County, COCO9101+0%

04Jackson County, COCO1,2111+0%

05Cheyenne County, COCO1,7131+0%

06San Juan County, COCO8131+0%

07Dolores County, COCO2,4662+0%

08Baca County, COCO3,3472+0%

09Rio Blanco County, COCO6,6832+0%

10Saguache County, COCO6,7322+0%

11Washington County, COCO4,7322+0%

12Lincoln County, COCO5,6452+0%

13Moffat County, COCO13,1223+0%

14Costilla County, COCO3,6793+0%

15Las Animas County, COCO14,3913+0%

16Kit Carson County, COCO7,0694+0%

17Bent County, COCO5,7164+0%

18Yuma County, COCO9,8964+0%

19Gunnison County, COCO17,4394+0%

20Custer County, COCO5,5905+0%

21Huerfano County, COCO7,0115+0%

22Sedgwick County, COCO2,2475+0%

23San Miguel County, COCO7,7535+0%

24Phillips County, COCO4,4207+0%

25Conejos County, COCO7,5297+0%

26Park County, COCO18,3147+0%

27Grand County, COCO16,4967+0%

28Ouray County, COCO5,2657+0%

29Crowley County, COCO5,6777+0%

30Archuleta County, COCO14,3067+0%

31Routt County, COCO25,3298+0%

32Prowers County, COCO11,8849+0%

33Elbert County, COCO30,53411+0%

34Logan County, COCO20,65411+0%

35Montezuma County, COCO26,67812+0%

36Rio Grande County, COCO11,08714+0%

37Garfield County, COCO63,47415+0%

38Montrose County, COCO44,59115+0%

39Pitkin County, COCO16,62515+0%

40Chaffee County, COCO20,83116+0%

41Otero County, COCO17,68316+0%

42Alamosa County, COCO16,68821+0%

43Lake County, COCO7,55221+0%

44Morgan County, COCO30,30621+0%

45Clear Creek County, COCO8,99424+0%

46Delta County, COCO32,17824+0%

47Eagle County, COCO54,29125+0%

48La Plata County, COCO56,89826+0%

49Fremont County, COCO50,03930+0%

50Gilpin County, COCO6,07332+0%

51Mesa County, COCO162,84535+0%

52Teller County, COCO24,75637+0%

53Summit County, COCO31,51739+0%

54Weld County, COCO378,42645+0%

55Pueblo County, COCO169,27759+0%

56Larimer County, COCO377,29297+0%

57Douglas County, COCO399,396209+0%

58El Paso County, COCO757,040243+0%

59Adams County, COCO554,668312+0%

60Boulder County, COCO328,560401+0%

61Arapahoe County, COCO673,820612+0%

62Jefferson County, COCO580,451690+0%

63Denver County, COCO740,6133,623+0%

SHOWING 1–63 OF 63

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES