23 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Westminster | Adams County | 114,964 |
| Windsor | Weld County | 43,857 |
| Wheat Ridge | Jefferson County | 31,903 |
| Welby | Adams County | 16,647 |
| Wellington | Larimer County | 12,339 |
| Woodmoor | El Paso County | 8,889 |
| Woodland Park | Teller County | 8,074 |
| West Pleasant View | Jefferson County | 5,536 |
| Walsenburg | Huerfano County | 3,032 |
| Wray | Yuma County | 2,373 |
| Wiggins | Morgan County | 1,980 |
| Watkins | Adams County | 1,239 |
| Winter Park | Grand County | 1,221 |
| Williamsburg | Fremont County | 794 |
| Walden | Jackson County | 544 |
| Walsh | Baca County | 510 |
| Westcliffe | Custer County | 509 |
| Wiley | Prowers County | 436 |
| Westcreek | Douglas County | 319 |
| Woody Creek | Pitkin County | 231 |
| Ward | Boulder County | 125 |
| Weldona | Morgan County | 118 |
| Weston | Las Animas County | 39 |