UpAlphabetical listing of Places in Colorado
| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
| Jack Springs | city | Colorado | United States | 40.35 | -108.70 | 7053 | |
| Jackson Field | city | Colorado | United States | 40.41 | -104.69 | 5029 | |
| Jamestown | city | Colorado | United States | 40.12 | -105.39 | 6998 | |
| Jansen | city | Colorado | United States | 37.16 | -104.54 | 6197 | |
| Jaroso | city | Colorado | United States | 37.00 | -105.62 | 7598 | |
| Jasper | city | Colorado | United States | 37.42 | -106.46 | 9228 | |
| Jefferson | city | Colorado | United States | 39.38 | -105.80 | 9465 | |
| Jessica | city | Colorado | United States | 40.76 | -103.17 | 4189 | |
| Jessum | city | Colorado | United States | 40.14 | -105.02 | 5029 | |
| Joes | city | Colorado | United States | 39.66 | -102.68 | 4297 | |
| John Held Corner | city | Colorado | United States | 39.14 | -108.14 | 6709 | |
| Johnson | city | Colorado | United States | 40.09 | -104.44 | 5029 | |
| Johnson Village | city | Colorado | United States | 38.81 | -106.11 | 7798 | |
| Johnsons Corner | city | Colorado | United States | 39.09 | -108.50 | 5029 | |
| Johnstown | city | Colorado | United States | 40.34 | -104.91 | 5029 | |
| Juanita | city | Colorado | United States | 37.03 | -107.15 | 6709 | |
| Juanita Junction | city | Colorado | United States | 38.92 | -107.53 | 5997 | |
| Julesburg | city | Colorado | United States | 40.99 | -102.26 | 3477 | |
| Juniper Hot Springs | city | Colorado | United States | 40.47 | -107.95 | 6000 | |
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