| Rank | City | 2000 Population | Growth Rate (Annual) |
|---|---|---|---|
| 1 | Denver | 556,094 | 1.7% |
| 2 | Colorado Springs | 362,186 | 2.5% |
| 3 | Aurora | 277,825 | 2.3% |
| 4 | Lakewood | 144,410 | 1.4% |
| 5 | Fort Collins | 120,062 | 3.1% |
| 6 | Centennial | 102,439 | – |
| 7 | Arvada | 102,253 | 1.3% |
| 8 | Pueblo | 102,133 | 0.3% |
| 9 | Westminster | 101,346 | 3.2% |
| 10 | Boulder | 94,598 | 0.9% |
| 11 | Thornton | 83,269 | 4.2% |
| 12 | Greeley | 78,385 | 2.6% |
| 13 | Longmont | 72,245 | 3.3% |
| 14 | Loveland | 51,881 | 3.3% |
| 15 | Grand Junction | 45,652 | 2.9% |
| 16 | Littleton | 40,452 | 1.8% |
| 17 | Broomfield | 39,563 | 4.7% |
| 18 | Wheat Ridge | 32,867 | 1.1% |
| 19 | Northglenn | 32,446 | 1.7% |
| 20 | Englewood | 31,960 | 0.7% |
| 21 | Parker | 24,738 | 16.0% |
| 22 | Lafayette | 23,366 | 4.6% |
| 23 | Brighton | 21,297 | 4.1% |
| 24 | Commerce City | 21,147 | 2.3% |
| 25 | Castle Rock | 20,924 | 9.8% |
| 26 | Louisville | 19,050 | 4.3% |
| 27 | Golden | 17,209 | 2.9% |
| 28 | Ca�City | 15,573 | – |
| 29 | Fountain | 15,516 | 3.5% |
| 30 | Durango | 14,519 | 1.3% |
| 31 | Montrose | 13,015 | 3.3% |
| 32 | Sterling | 12,806 | 2.3% |
| 33 | Federal Heights | 12,079 | 2.6% |
| 34 | Greenwood Village | 11,662 | 4.3% |
| 35 | Fort Morgan | 11,025 | 1.9% |
| 36 | Evans | 10,494 | 5.5% |
| 37 | Windsor | 10,360 | 7.1% |
| 38 | Steamboat Springs | 10,082 | 4.1% |
| 39 | Superior | 9,246 | 42.1% |
| 40 | Craig | 9,168 | 1.2% |
| 41 | Trinidad | 9,125 | 0.5% |
| 42 | Lamar | 8,842 | 0.5% |
| 43 | Alamosa | 8,434 | 1.0% |
| 44 | Cortez | 8,005 | 0.8% |
| 45 | Glenwood Springs | 7,872 | 1.8% |
| 46 | Delta | 7,841 | 4.5% |
| 47 | La Junta | 7,554 | -0.2% |
| 48 | Fort Lupton | 7,224 | 3.0% |
| 49 | Lone Tree | 6,934 | 18.6% |
| 50 | Rifle | 6,909 | 2.4% |
| 51 | Woodland Park | 6,784 | 3.5% |
| 52 | Fruita | 6,734 | 4.5% |
| 53 | Erie | 6,554 | 17.9% |
| 54 | Cherry Hills Village | 5,990 | 1.3% |
| 55 | Aspen | 5,960 | 1.4% |
| 56 | Avon | 5,678 | 12.3% |
| 57 | Salida | 5,593 | 1.6% |
| 58 | Estes Park | 5,560 | 5.3% |
| 59 | Sheridan | 5,540 | 1.1% |
| 60 | Edgewater | 5,460 | 1.7% |
| 61 | Gunnison | 5,404 | 1.6% |
| 62 | Carbondale | 5,281 | 5.5% |
| 63 | Brush | 5,129 | 2.2% |
| 64 | Berthoud | 5,030 | 5.0% |
| 65 | Manitou Springs | 4,993 | 1.0% |
| 66 | Vail | 4,629 | 2.2% |
| 67 | Monte Vista | 4,586 | 0.5% |
| 68 | Glendale | 4,536 | 6.0% |
| 69 | Johnstown | 4,471 | 10.9% |
| 70 | Rocky Ford | 4,270 | 0.1% |
| 71 | Walsenburg | 4,148 | 2.3% |
| 72 | Gypsum | 3,893 | 8.3% |
| 73 | Burlington | 3,662 | 2.5% |
| 74 | Florence | 3,655 | 1.9% |
| 75 | Castle Pines North | 3,623 | – |
| 76 | Yuma | 3,282 | 2.0% |
| 77 | Silverthorne | 3,235 | 5.8% |
| 78 | Dacono | 3,089 | 3.2% |
| 79 | Eagle | 3,063 | 6.4% |
| 80 | Milliken | 3,047 | 6.4% |
| 81 | Orchard City | 2,891 | 3.1% |
| 82 | Breckenridge | 2,851 | 7.5% |
| 83 | Leadville | 2,817 | 0.4% |
| 84 | Frederick | 2,807 | 9.8% |
| 85 | Eaton | 2,797 | 3.2% |
| 86 | Basalt | 2,750 | 7.9% |
| 87 | Las Animas | 2,740 | 0.8% |
| 88 | Wellington | 2,716 | 8.5% |
| 89 | Palisade | 2,585 | 2.9% |
| 90 | Frisco | 2,436 | 4.2% |
| 91 | Center | 2,395 | 2.1% |
| 92 | Platteville | 2,384 | 5.4% |
| 93 | Firestone | 2,269 | 4.0% |
| 94 | Telluride | 2,254 | 5.3% |
| 95 | Holyoke | 2,248 | 1.5% |
| 96 | Meeker | 2,236 | 0.6% |
| 97 | Buena Vista | 2,198 | 2.1% |
| 98 | Palmer Lake | 2,191 | 4.0% |
| 99 | Wray | 2,189 | 0.8% |
| 100 | Lochbuie | 2,163 | 6.4% |
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