| City | Rank | Annual Change ↓ | 2026 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Keystone | 1 | 13.71% | 1,269 | 1,295 |
| Keenesburg | 2 | 9.54% | 2,308 | 1,256 |
| Elizabeth | 3 | 8.89% | 3,220 | 1,710 |
| Timnath | 4 | 8.77% | 12,617 | 6,756 |
| Deer Trail | 5 | 7.64% | 1,889 | 1,106 |
| Severance | 6 | 7.59% | 12,740 | 8,011 |
| Ault | 7 | 7.01% | 2,854 | 1,923 |
| Mead | 8 | 6.97% | 7,533 | 4,791 |
| Castle Pines | 9 | 6.25% | 16,557 | 11,207 |
| Bennett | 10 | 6.25% | 4,488 | 2,907 |
| Wiggins | 11 | 5.78% | 1,976 | 1,437 |
| Berthoud | 12 | 5.38% | 14,837 | 10,601 |
| Monument | 13 | 5.34% | 14,551 | 10,422 |
| Erie | 14 | 5.04% | 42,967 | 30,422 |
| Windsor | 15 | 4.93% | 46,001 | 33,231 |
| Fort Lupton | 16 | 4.77% | 10,898 | 7,987 |
| Frederick | 17 | 4.52% | 19,065 | 14,715 |
| Silverthorne | 18 | 4.19% | 5,645 | 4,462 |
| Johnstown | 19 | 3.71% | 23,265 | 17,366 |
| Firestone | 20 | 3.47% | 20,828 | 16,653 |
| Gypsum | 21 | 3.07% | 9,495 | 8,105 |
| Columbine Valley | 22 | 2.97% | 1,734 | 1,502 |
| Commerce City | 23 | 2.86% | 74,414 | 62,760 |
| Castle Rock | 24 | 2.72% | 86,094 | 73,888 |
| Georgetown | 25 | 2.55% | 1,248 | 1,121 |
| Winter Park | 26 | 2.55% | 1,248 | 1,076 |
| Granby | 27 | 2.47% | 2,451 | 2,053 |
| Parker | 28 | 2.45% | 67,604 | 58,737 |
| Pagosa Springs | 29 | 2.39% | 1,882 | 1,621 |
| Fraser | 30 | 2.14% | 1,576 | 1,392 |
| Brighton | 31 | 2.04% | 46,320 | 40,280 |
| Buena Vista | 32 | 2.03% | 3,314 | 2,865 |
| Wellington | 33 | 1.94% | 12,405 | 11,167 |
| Milliken | 34 | 1.87% | 9,355 | 8,449 |
| Ridgway | 35 | 1.81% | 1,348 | 1,180 |
| Grand Junction | 36 | 1.68% | 73,036 | 65,752 |
| Delta | 37 | 1.64% | 9,963 | 9,053 |
| Dacono | 38 | 1.64% | 6,956 | 6,352 |
| Cedaredge | 39 | 1.55% | 2,486 | 2,284 |
| Englewood | 40 | 1.46% | 35,822 | 33,633 |
| Silt | 41 | 1.44% | 3,797 | 3,555 |
| Loveland | 42 | 1.42% | 82,545 | 76,344 |
| Montrose | 43 | 1.4% | 21,886 | 20,393 |
| Carbondale | 44 | 1.35% | 6,853 | 6,464 |
| Aurora | 45 | 1.32% | 415,462 | 386,688 |
| Mancos | 46 | 1.26% | 1,282 | 1,198 |
| Broomfield | 47 | 1.24% | 80,154 | 74,482 |
| Salida | 48 | 1.22% | 6,058 | 5,717 |
| Greeley | 49 | 1.2% | 116,451 | 109,259 |
| Lochbuie | 50 | 1.19% | 8,880 | 8,210 |
| Thornton | 51 | 1.05% | 149,318 | 142,162 |
| Gunnison | 52 | 1.02% | 6,906 | 6,575 |
| Glenwood Springs | 53 | 1% | 10,499 | 10,005 |
| Orchard City | 54 | 0.97% | 3,331 | 3,146 |
| Steamboat Springs | 55 | 0.96% | 13,687 | 13,225 |
| Durango | 56 | 0.93% | 19,916 | 19,112 |
| Fruita | 57 | 0.89% | 14,128 | 13,430 |
| Cortez | 58 | 0.89% | 9,207 | 8,780 |
| Superior | 59 | 0.83% | 13,750 | 13,106 |
| Meeker | 60 | 0.83% | 2,437 | 2,377 |
| Denver | 61 | 0.81% | 746,590 | 717,680 |
| Rifle | 62 | 0.74% | 10,924 | 10,436 |
| Fort Morgan | 63 | 0.58% | 11,910 | 11,550 |
| Colorado Springs | 64 | 0.57% | 497,549 | 481,230 |
| Las Animas | 65 | 0.56% | 2,338 | 2,296 |
| Bayfield | 66 | 0.54% | 2,990 | 2,867 |
| Centennial | 67 | 0.48% | 109,178 | 107,732 |
| Rangely | 68 | 0.48% | 2,315 | 2,300 |
| Ordway | 69 | 0.47% | 1,058 | 1,063 |
| Northglenn | 70 | 0.44% | 39,066 | 38,032 |
| Palisade | 71 | 0.38% | 2,609 | 2,562 |
| Leadville | 72 | 0.34% | 2,677 | 2,619 |
| Woodland Park | 73 | 0.3% | 8,038 | 7,920 |
| Cañon City | 74 | 0.3% | 17,081 | 16,918 |
| Basalt | 75 | 0.27% | 4,020 | 3,966 |
| Paonia | 76 | 0.27% | 1,481 | 1,452 |
| Evans | 77 | 0.23% | 22,552 | 22,293 |
| Brush | 78 | 0.22% | 5,349 | 5,316 |
| New Castle | 79 | 0.22% | 4,907 | 4,914 |
| Alamosa | 80 | 0.22% | 9,871 | 9,813 |
| Nederland | 81 | 0.21% | 1,466 | 1,468 |
| Lakewood | 82 | 0.18% | 157,210 | 156,263 |
| Keystone | 83 | 0.18% | 1,118 | 1,295 |
| Florence | 84 | 0.16% | 3,862 | 3,834 |
| Lafayette | 85 | 0.11% | 30,150 | 30,390 |
| Fort Collins | 86 | 0.11% | 171,693 | 169,954 |
| Longmont | 87 | 0.1% | 100,211 | 99,192 |
| Eaton | 88 | 0.07% | 5,852 | 5,846 |
| Hayden | 89 | 0.04% | 2,251 | 1,932 |
| Cherry Hills Village | 90 | 0.02% | 6,390 | 6,425 |
| Gilcrest | 91 | 0% | 1,017 | 1,021 |
| Wray | 92 | 0% | 2,352 | 2,326 |
| Crested Butte | 93 | -0.06% | 1,692 | 1,656 |
| Westminster | 94 | -0.07% | 116,095 | 116,639 |
| Littleton | 95 | -0.08% | 46,208 | 45,578 |
| Walsenburg | 96 | -0.1% | 3,036 | 3,050 |
| Craig | 97 | -0.1% | 8,865 | 9,037 |
| Pueblo | 98 | -0.12% | 110,269 | 111,886 |
| Kersey | 99 | -0.13% | 1,498 | 1,508 |
| Breckenridge | 100 | -0.14% | 5,008 | 5,054 |
| Pierce | 101 | -0.18% | 1,084 | 1,096 |
| Burlington | 102 | -0.19% | 3,158 | 3,172 |
| Parachute | 103 | -0.22% | 1,363 | 1,389 |
| Wheat Ridge | 104 | -0.23% | 32,007 | 32,380 |
| Golden | 105 | -0.24% | 20,341 | 20,394 |
| Greenwood Village | 106 | -0.25% | 15,285 | 15,632 |
| Lamar | 107 | -0.29% | 7,566 | 7,697 |
| Lone Tree | 108 | -0.31% | 15,231 | 14,214 |
| Springfield | 109 | -0.31% | 1,289 | 1,322 |
| Yuma | 110 | -0.35% | 3,412 | 3,470 |
| Hudson | 111 | -0.37% | 1,615 | 1,645 |
| Fountain | 112 | -0.39% | 29,336 | 29,883 |
| Keystone | 113 | -0.39% | 1,269 | 1,295 |
| Sheridan | 114 | -0.4% | 5,948 | 6,103 |
| Mountain Village | 115 | -0.41% | 1,229 | 1,261 |
| Akron | 116 | -0.41% | 1,718 | 1,760 |
| Platteville | 117 | -0.41% | 2,896 | 2,959 |
| Arvada | 118 | -0.41% | 122,391 | 124,350 |
| Glendale | 119 | -0.42% | 4,456 | 4,601 |
| Eagle | 120 | -0.43% | 7,249 | 7,509 |
| Boulder | 121 | -0.44% | 105,220 | 108,431 |
| Federal Heights | 122 | -0.45% | 14,011 | 14,393 |
| Estes Park | 123 | -0.48% | 5,752 | 5,904 |
| Trinidad | 124 | -0.51% | 8,050 | 8,339 |
| La Salle | 125 | -0.52% | 2,292 | 2,359 |
| Limon | 126 | -0.54% | 2,010 | 2,038 |
| Louisville | 127 | -0.55% | 20,468 | 21,205 |
| Center | 128 | -0.58% | 1,879 | 1,959 |
| Dillon | 129 | -0.58% | 1,023 | 1,061 |
| Edgewater | 130 | -0.6% | 4,841 | 5,005 |
| Snowmass Village | 131 | -0.64% | 2,946 | 3,001 |
| Lyons | 132 | -0.66% | 2,105 | 2,204 |
| Olathe | 133 | -0.67% | 1,914 | 2,001 |
| Sterling | 134 | -0.69% | 12,964 | 13,419 |
| Rocky Ford | 135 | -0.69% | 3,726 | 3,860 |
| Holyoke | 136 | -0.71% | 2,248 | 2,345 |
| Avon | 137 | -0.79% | 6,135 | 6,141 |
| Palmer Lake | 138 | -0.85% | 2,569 | 2,657 |
| Del Norte | 139 | -0.86% | 1,384 | 1,456 |
| Cripple Creek | 140 | -0.98% | 1,109 | 1,154 |
| Frisco | 141 | -1.04% | 2,763 | 2,926 |
| Kremmling | 142 | -1.1% | 1,435 | 1,510 |
| Fowler | 143 | -1.28% | 1,156 | 1,252 |
| La Junta | 144 | -1.35% | 6,771 | 7,324 |
| Julesburg | 145 | -1.4% | 1,200 | 1,299 |
| Monte Vista | 146 | -1.42% | 3,948 | 4,255 |
| Telluride | 147 | -1.43% | 2,419 | 2,617 |
| Aspen | 148 | -1.48% | 6,393 | 6,979 |
| Manitou Springs | 149 | -1.57% | 4,505 | 4,879 |
| Idaho Springs | 150 | -1.57% | 1,813 | 1,804 |
| Vail | 151 | -1.86% | 4,325 | 4,826 |
| Keystone | 152 | -12.24% | 1,118 | 1,295 |
Colorado's cities with over 1,000 residents show varied growth patterns from 2020 to 2025. Keystone leads with 13.71% annualized growth, followed by Keenesburg (9.54%) and Elizabeth (8.89%). The largest population centers are Denver (746,590), Colorado Springs (497,549), and Aurora (415,462). Of the 152 cities over 1,000 population, 92 are growing while 60 experienced population decline. Overall, cities averaged 1.04% annualized growth, with total urban population growing by 5.48% annually.