23 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Westminster | Adams County | 113,729 |
| Windsor | Weld County | 45,095 |
| Wheat Ridge | Jefferson County | 31,420 |
| Welby | Adams County | 16,647 |
| Wellington | Larimer County | 12,696 |
| Woodmoor | El Paso County | 8,889 |
| Woodland Park | Teller County | 7,840 |
| West Pleasant View | Jefferson County | 5,536 |
| Walsenburg | Huerfano County | 3,109 |
| Wray | Yuma County | 2,303 |
| Wiggins | Morgan County | 2,038 |
| Watkins | Adams County | 1,239 |
| Winter Park | Grand County | 1,222 |
| Williamsburg | Fremont County | 787 |
| Walden | Jackson County | 549 |
| Westcliffe | Custer County | 541 |
| Walsh | Baca County | 494 |
| Wiley | Prowers County | 425 |
| Westcreek | Douglas County | 319 |
| Woody Creek | Pitkin County | 231 |
| Ward | Boulder County | 123 |
| Weldona | Morgan County | 118 |
| Weston | Las Animas County | 39 |