RANKING · 2010 CENSUS · 111 SHOWN OF 111

Most population lost, Colorado cities · 2010

Colorado cities that lost the most residents from the 2000 census to 2010, by raw count of people rather than percentage. This list covers the 111 cities in Colorado that qualify, ranked against each other statewide. The median across all 111 is +2,009.

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SAME RANKING BYCounties States Metros

YEAR2000 2010 2020 2024

RANKPLACESTATEPOPPOPULATION CHANGEVS 2000

01Wheat Ridge, COCO32,081-2,747−179%

02Castle Pines, COCO15,583-2,344–

03Englewood, COCO35,305-1,472−163%

04Lakewood, COCO156,927-1,146−106%

05Lamar, COCO7,588-1,065−302%

06Air Force Academy, COCO6,727-846−45%

07Federal Heights, COCO14,075-598−122%

08Louisville, COCO20,581-561−109%

09La Junta, COCO6,864-491+582%

10Salida, COCO5,985-268−135%

11Twin Lakes CDP (Adams County), COCO8,030-200–

12Evergreen, COCO8,602-178−111%

13Gunbarrel, COCO10,051-172−500%

14Black Forest, COCO15,738-131−103%

15West Pleasant View, COCO5,051-92–

16Trinidad, COCO8,091+18−96%

17Cherry Hills, COCO6,389+29−96%

18Applewood, COCO8,350+37−101%

19Sheridan, COCO5,972+64−90%

20Columbine, COCO25,478+185+40%

21Stratmoor, COCO5,412+250−69%

22Berthoud, COCO14,080+266−86%

23Craig, COCO8,874+275−75%

24Fort Morgan, COCO11,841+281−86%

25Brush, COCO5,337+346−64%

26Orchard Mesa, COCO6,945+380−21%

27Timnath, COCO11,600+402+688%

28Estes Park, COCO5,780+445−80%

29Gunnison, COCO6,836+445−42%

30Berkley, COCO10,789+464–

31Cortez, COCO9,126+505−27%

32Fort Lupton, COCO10,402+590−64%

33Sherrelwood, COCO18,692+630−38%

34Redlands, COCO8,868+642−149%

35Woodland Park, COCO8,014+685−64%

36Silverthorne, COCO5,418+691−52%

37Fruitvale, COCO8,019+739−57%

38Aspen, COCO6,489+744−14%

39Alamosa, COCO9,849+820+104%

40Avon, COCO6,184+886−76%

41Cimarron Hills, COCO19,817+967−76%

42Cañon City, COCO17,030+969−63%

43Battlement Mesa, COCO5,755+974−52%

44Dacono, COCO6,844+1,137+44%

45Carbondale, COCO6,762+1,231–

46Lafayette, COCO30,116+1,256−85%

47Derby, COCO8,453+1,262+232%

48Mead, COCO7,042+1,388−9%

49Littleton, COCO46,246+1,397−79%

50Ken Caryl, COCO33,233+1,551−76%

51Woodmoor, COCO8,934+1,564−53%

52Eaton, COCO5,848+1,675+129%

53Golden, COCO20,390+1,708−58%

54Welby, COCO16,197+1,873−32%

55Glenwood Springs, COCO10,395+1,878+60%

56Edwards, COCO10,785+2,009–

57Breckenridge, COCO5,015+2,132+90%

58Steamboat Springs, COCO13,557+2,273−27%

59Gleneagle, COCO6,440+2,365−4%

60Rifle, COCO10,844+2,388+11%

61Todd Creek, COCO5,379+2,469–

62Delta, COCO9,802+2,515−4%

63Clifton, COCO19,518+2,544−46%

64Severance, COCO11,841+2,568+423%

65Lochbuie, COCO8,776+2,677+204%

66Stonegate, COCO8,906+2,678–

67Boulder, COCO105,689+2,712−76%

68Milliken, COCO9,183+2,722+107%

69Meridian, COCO5,634+2,786–

70Gypsum, COCO9,212+2,823+48%

71Greenwood, COCO15,323+2,890−16%

72Durango, COCO19,733+2,965+99%

73Security-Widefield, COCO37,345+3,037–

74Fort Carson, COCO18,019+3,247−537%

75The Pinery, COCO11,871+3,264+38%

76Sterling, COCO13,054+3,417+244%

77Superior, COCO13,637+3,472−60%

78Eagle, COCO7,280+3,476+139%

79Monument, COCO13,813+3,559+274%

80Wellington, COCO12,169+3,617+175%

81Northglenn, COCO38,893+4,214−4%

82Arvada, COCO122,901+4,280−67%

83Pueblo, COCO110,404+4,474+29%

84Roxborough Park, COCO9,085+4,653–

85Westminster, COCO116,182+5,174−80%

86Lone Tree, COCO15,278+5,345–

87Johnstown, COCO22,433+6,060+170%

88Fruita, COCO14,003+6,168+154%

89Frederick, COCO18,241+6,212+320%

90Montrose, COCO21,583+6,788+94%

91Firestone, COCO20,129+8,239+1398%

92Windsor, COCO43,840+8,748+81%

93Evans, COCO22,500+9,023+148%

94Fountain, COCO29,450+10,649+104%

95Erie, COCO40,904+11,844+136%

96Brighton, COCO45,395+12,447+86%

97Pueblo West, COCO35,681+12,738+2%

98Longmont, COCO100,109+15,177−22%

99Greeley, COCO115,073+15,959−3%

100Loveland, COCO81,387+16,251+23%

101Grand Junction, COCO71,827+16,580+28%

102Broomfield, COCO79,174+17,617+29%

103Parker, COCO65,985+21,739+20%

104Commerce City, COCO72,345+24,922+451%

105Fort Collins, COCO171,500+25,334−18%

106Highlands Ranch, COCO102,257+25,782−58%

107Castle Rock, COCO83,815+28,007+143%

108Thornton, COCO147,766+36,388+33%

109Denver, COCO740,613+45,522−48%

110Aurora, COCO410,053+48,685−10%

111Colorado Springs, COCO494,743+55,537−30%

SHOWING 1–111 OF 111

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS