RANKING · 2010 CENSUS · 111 SHOWN OF 111

Fastest shrinking, Colorado cities · 2010

Colorado cities with the steepest population decline since the prior decennial census. This list covers the 111 cities in Colorado that qualify, ranked against each other statewide.

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SAME RANKING BYCounties States Metros

YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Castle Pines, COCO15,583-39.3%–

02Lamar, COCO7,588-12.0%−290%

03Air Force Academy, COCO6,727-11.2%−34%

04Wheat Ridge, COCO32,081-8.3%−170%

05La Junta, COCO6,864-6.5%+588%

06Federal Heights, COCO14,075-5.0%−117%

07Salida, COCO5,985-4.9%−130%

08Englewood, COCO35,305-4.6%−158%

09Twin Lakes CDP (Adams County), COCO8,030-3.2%–

10Louisville, COCO20,581-3.0%−106%

11West Pleasant View, COCO5,051-2.3%–

12Evergreen, COCO8,602-1.9%−109%

13Gunbarrel, COCO10,051-1.8%−498%

14Black Forest, COCO15,738-1.0%−102%

15Lakewood, COCO156,927-0.8%−106%

16Trinidad, COCO8,091+0.2%−97%

17Cherry Hills, COCO6,389+0.5%−96%

18Applewood, COCO8,350+0.5%−101%

19Columbine, COCO25,478+0.8%+39%

20Sheridan, COCO5,972+1.1%−91%

21Fort Morgan, COCO11,841+2.5%−88%

22Boulder, COCO105,689+2.9%−79%

23Craig, COCO8,874+3.0%−78%

24Littleton, COCO46,246+3.5%−83%

25Sherrelwood, COCO18,692+3.6%−42%

26Stratmoor, COCO5,412+3.8%−72%

27Arvada, COCO122,901+4.2%−71%

28Berkley, COCO10,789+4.3%–

29Pueblo, COCO110,404+4.4%+24%

30Ken Caryl, COCO33,233+5.0%−81%

31Westminster, COCO116,182+5.1%−85%

32Lafayette, COCO30,116+5.4%−91%

33Berthoud, COCO14,080+5.5%−91%

34Orchard Mesa, COCO6,945+5.9%−27%

35Cañon City, COCO17,030+6.3%−69%

36Cortez, COCO9,126+6.3%−33%

37Cimarron Hills, COCO19,817+6.4%−82%

38Brush, COCO5,337+6.8%−71%

39Redlands, COCO8,868+8.0%−157%

40Denver, COCO740,613+8.2%−56%

41Estes Park, COCO5,780+8.2%−88%

42Gunnison, COCO6,836+8.2%−51%

43Fort Lupton, COCO10,402+8.7%−72%

44Golden, COCO20,390+10.0%−67%

45Security-Widefield, COCO37,345+10.2%–

46Alamosa, COCO9,849+10.3%+94%

47Woodland Park, COCO8,014+10.5%−75%

48Fruitvale, COCO8,019+10.7%−68%

49Aspen, COCO6,489+12.6%−27%

50Northglenn, COCO38,893+13.3%−17%

51Welby, COCO16,197+14.4%−46%

52Clifton, COCO19,518+14.7%−60%

53Colorado Springs, COCO494,743+15.4%−46%

54Avon, COCO6,184+15.9%−92%

55Aurora, COCO410,053+17.6%−28%

56Derby, COCO8,453+19.6%+212%

57Greeley, COCO115,073+20.7%−23%

58Durango, COCO19,733+21.3%+77%

59Longmont, COCO100,109+21.3%−44%

60Fort Collins, COCO171,500+21.4%−39%

61Silverthorne, COCO5,418+21.6%−74%

62Woodmoor, COCO8,934+21.8%−75%

63Steamboat Springs, COCO13,557+23.2%−50%

64Carbondale, COCO6,762+23.7%–

65Glenwood Springs, COCO10,395+24.3%+36%

66Edwards, COCO10,785+24.3%–

67Greenwood, COCO15,323+26.2%−42%

68Battlement Mesa, COCO5,755+27.9%−80%

69Sterling, COCO13,054+30.1%+214%

70Fort Carson, COCO18,019+30.7%−568%

71Loveland, COCO81,387+32.1%−9%

72Rifle, COCO10,844+35.2%−24%

73Highlands Ranch, COCO102,257+36.3%−94%

74Dacono, COCO6,844+37.7%+6%

75Superior, COCO13,637+38.5%−99%

76Delta, COCO9,802+39.3%−43%

77Grand Junction, COCO71,827+39.5%−11%

78Stonegate, COCO8,906+42.6%–

79Thornton, COCO147,766+44.2%−11%

80The Pinery, COCO11,871+45.0%−7%

81Broomfield, COCO79,174+46.0%−17%

82Montrose, COCO21,583+55.0%+40%

83Gleneagle, COCO6,440+55.7%−60%

84Brighton, COCO45,395+59.5%+26%

85Eaton, COCO5,848+62.3%+67%

86Mead, COCO7,042+68.8%−78%

87Fountain, COCO29,450+70.1%+34%

88Pueblo West, COCO35,681+75.4%−74%

89Gypsum, COCO9,212+77.3%−29%

90Windsor, COCO43,840+88.4%−7%

91Breckenridge, COCO5,015+88.5%+1%

92Parker, COCO65,985+92.3%−72%

93Milliken, COCO9,183+94.3%+13%

94Evans, COCO22,500+94.8%+53%

95Fruita, COCO14,003+95.2%+58%

96Roxborough Park, COCO9,085+104.7%–

97Lone Tree, COCO15,278+109.7%–

98Eagle, COCO7,280+114.6%+25%

99Commerce City, COCO72,345+118.7%+332%

100Lochbuie, COCO8,776+130.6%+73%

101Wellington, COCO12,169+135.4%+40%

102Castle Rock, COCO83,815+138.5%+5%

103Johnstown, COCO22,433+158.3%+11%

104Timnath, COCO11,600+180.3%+508%

105Monument, COCO13,813+180.6%+94%

106Erie, COCO40,904+188.3%−53%

107Todd Creek, COCO5,379+190.1%–

108Frederick, COCO18,241+251.8%+68%

109Severance, COCO11,841+430.2%−7%

110Firestone, COCO20,129+431.8%+966%

111Meridian, COCO5,634+1514.1%–

SHOWING 1–111 OF 111

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