| Rank | City | 2017 Population (Est.) | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Denver | 693,060 | 2.4% |
| 2 | Colorado Springs | 465,101 | 1.9% |
| 3 | Aurora | 361,710 | 1.8% |
| 4 | Fort Collins | 164,207 | 2.2% |
| 5 | Lakewood | 154,393 | 1.3% |
| 6 | Thornton | 136,703 | 2.4% |
| 7 | Arvada | 117,453 | 1.7% |
| 8 | Westminster | 113,875 | 1.2% |
| 9 | Pueblo | 110,291 | 0.6% |
| 10 | Centennial | 109,932 | 1.5% |
| 11 | Boulder | 108,090 | 1.8% |
| 12 | Greeley | 103,990 | 1.9% |
| 13 | Longmont | 92,858 | 1.2% |
| 14 | Loveland | 76,897 | 2.4% |
| 15 | Broomfield | 66,529 | 2.9% |
| 16 | Grand Junction | 61,881 | 0.9% |
| 17 | Castle Rock | 57,666 | 3.0% |
| 18 | Commerce City | 54,869 | 3.0% |
| 19 | Parker | 51,163 | 2.1% |
| 20 | Littleton | 46,333 | 1.8% |
| 21 | Northglenn | 38,982 | 1.4% |
| 22 | Brighton | 38,314 | 2.3% |
| 23 | Englewood | 34,050 | 2.0% |
| 24 | Wheat Ridge | 31,372 | 0.7% |
| 25 | Fountain | 28,753 | 1.8% |
| 26 | Lafayette | 28,261 | 2.4% |
| 27 | Erie | 22,803 | 3.9% |
| 28 | Windsor | 22,776 | 3.4% |
| 29 | Evans | 21,615 | 2.6% |
| 30 | Louisville | 20,801 | 2.1% |
| 31 | Golden | 20,696 | 1.6% |
| 32 | Montrose | 19,311 | 0.2% |
| 33 | Durango | 18,503 | 1.5% |
| 34 | Cañon City | 16,679 | 0.3% |
| 35 | Greenwood Village | 15,749 | 2.1% |
| 36 | Johnstown | 15,389 | 7.7% |
| 37 | Sterling | 13,988 | -0.9% |
| 38 | Lone Tree | 13,271 | 4.5% |
| 39 | Superior | 13,155 | 0.9% |
| 40 | Fruita | 12,924 | 0.4% |
| 41 | Firestone | 12,917 | 4.1% |
| 42 | Steamboat Springs | 12,690 | 0.8% |
| 43 | Federal Heights | 12,458 | 1.4% |
| 44 | Frederick | 12,154 | 5.8% |
| 45 | Fort Morgan | 11,348 | 0.0% |
| 46 | Castle Pines | 10,284 | -0.2% |
| 47 | Glenwood Springs | 9,997 | 0.7% |
| 48 | Alamosa | 9,918 | 2.1% |
| 49 | Rifle | 9,665 | 0.9% |
| 50 | Cortez | 9,007 | 1.0% |
| 51 | Craig | 8,952 | -0.9% |
| 52 | Delta | 8,914 | -0.0% |
| 53 | Wellington | 8,516 | 5.2% |
| 54 | Trinidad | 8,103 | -1.9% |
| 55 | Fort Lupton | 7,971 | 1.3% |
| 56 | Lamar | 7,534 | -0.6% |
| 57 | Woodland Park | 7,390 | 0.4% |
| 58 | Gypsum | 6,969 | 1.2% |
| 59 | La Junta | 6,930 | -0.3% |
| 60 | Aspen | 6,871 | 0.5% |
| 61 | Carbondale | 6,777 | 0.9% |
| 62 | Eagle | 6,739 | 0.6% |
| 63 | Milliken | 6,678 | 2.9% |
| 64 | Cherry Hills Village | 6,585 | 1.6% |
| 65 | Monument | 6,556 | 2.9% |
| 66 | Avon | 6,525 | 0.2% |
| 67 | Berthoud | 6,368 | 3.8% |
| 68 | Estes Park | 6,362 | 1.4% |
| 69 | Gunnison | 6,261 | 1.1% |
| 70 | Sheridan | 6,041 | 1.1% |
| 71 | Lochbuie | 5,719 | 3.2% |
| 72 | Salida | 5,581 | 1.1% |
| 73 | Vail | 5,483 | 0.6% |
| 74 | Brush | 5,408 | -0.2% |
| 75 | Edgewater | 5,323 | 0.5% |
| 76 | Manitou Springs | 5,317 | 1.1% |
| 77 | Glendale | 5,197 | 3.7% |
| 78 | Dacono | 5,090 | 3.5% |
| 79 | Eaton | 5,086 | 2.6% |
| 80 | Breckenridge | 4,896 | 1.3% |
| 81 | New Castle | 4,753 | 0.8% |
| 82 | Mead | 4,553 | 5.0% |
| 83 | Silverthorne | 4,505 | 2.5% |
| 84 | Monte Vista | 4,266 | -0.7% |
| 85 | Burlington | 4,184 | -0.3% |
| 86 | Severance | 4,021 | 4.1% |
| 87 | Florence | 3,943 | 0.3% |
| 88 | Basalt | 3,921 | 0.3% |
| 89 | Rocky Ford | 3,816 | -0.6% |
| 90 | Yuma | 3,582 | 0.3% |
| 91 | Silt | 3,087 | 0.9% |
| 92 | Frisco | 3,084 | 2.3% |
| 93 | Orchard City | 3,065 | -0.3% |
| 94 | Walsenburg | 2,966 | -0.6% |
| 95 | Timnath | 2,947 | 29.5% |
| 96 | Snowmass Village | 2,900 | 0.4% |
| 97 | Buena Vista | 2,778 | 1.0% |
| 98 | Platteville | 2,722 | 1.5% |
| 99 | Leadville | 2,693 | 0.6% |
| 100 | Palisade | 2,644 | -0.3% |
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