Largest Cities in Colorado (by population)
| Rank | City | Estimated Population | County |
|---|---|---|---|
| 1 | Denver | 734,718 | Denver |
| 2 | Colorado Springs | 499,474 | El Paso |
| 3 | Aurora | 411,293 | Arapahoe / Adams / Douglas |
| 4 | Fort Collins | 171,391 | Larimer |
| 5 | Lakewood | 157,161 | Jefferson |
| 6 | Thornton | 148,938 | Adams / Weld |
| 7 | Arvada | 120,628 | Jefferson / Adams |
| 8 | Greeley | 116,900 | Weld |
| 9 | Westminster | 114,626 | Adams / Jefferson |
| 10 | Pueblo | 110,794 | Pueblo |