| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Jack Springs | city | Colorado | United States | 40.35111 | -108.7025 | 7053 | 14 |
| Jackson Field | city | Colorado | United States | 40.40694 | -104.68583 | 4648 | 60992 |
| Jamestown | city | Colorado | United States | 40.11556 | -105.38806 | 6998 | 1669 |
| Jansen | city | Colorado | United States | 37.14944 | -104.53833 | 6197 | 3076 |
| Jaroso | city | Colorado | United States | 37.00278 | -105.62361 | 7598 | 173 |
| Jasper | city | Colorado | United States | 37.41778 | -106.46194 | 9730 | 101 |
| Jefferson | city | Colorado | United States | 39.37722 | -105.8 | 9465 | 474 |
| Jessica | city | Colorado | United States | 40.76056 | -103.17139 | 3989 | 208 |
| Jessum | city | Colorado | United States | 40.13889 | -105.02444 | 4895 | 10948 |
| Joes | city | Colorado | United States | 39.65639 | -102.67833 | 4297 | 91 |
| John Held Corner | city | Colorado | United States | 39.13667 | -108.13556 | 6597 | 103 |
| Johnson | city | Colorado | United States | 40.0875 | -104.44222 | 4826 | 327 |
| Johnson Village | city | Colorado | United States | 38.81083 | -106.10611 | 7798 | 515 |
| Johnsons Corner | city | Colorado | United States | 39.09194 | -108.49611 | 4714 | 37647 |
| Johnstown | city | Colorado | United States | 40.33694 | -104.91167 | 4783 | 2379 |
| Juanita | city | Colorado | United States | 37.02722 | -107.15 | 6397 | 202 |
| Juanita Junction | city | Colorado | United States | 38.92472 | -107.5275 | 5997 | 509 |
| Julesburg | city | Colorado | United States | 40.98833 | -102.26389 | 3477 | 387 |
| Juniper Hot Springs | city | Colorado | United States | 40.46722 | -107.95306 | 6000 | 30 |
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