| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Rago | city | Colorado | United States | 40.00194 | -103.415 | 4589 | 154 |
| Ramah | city | Colorado | United States | 39.12167 | -104.16528 | 6095 | 504 |
| Rand | city | Colorado | United States | 40.45389 | -106.18083 | 8707 | 42 |
| Randall | city | Colorado | United States | 38.09556 | -103.57917 | 4183 | 554 |
| Rangely | city | Colorado | United States | 40.0875 | -108.80417 | 5275 | 103 |
| Raymer | city | Colorado | United States | 40.60806 | -103.84194 | 4721 | 47 |
| Raymond | city | Colorado | United States | 40.155 | -105.46389 | 8041 | 622 |
| Read | city | Colorado | United States | 38.76611 | -107.97556 | 5088 | 2416 |
| Red Cliff | city | Colorado | United States | 39.51222 | -106.3675 | 8923 | 363 |
| Red Feather Lakes | city | Colorado | United States | 40.8025 | -105.59111 | 8307 | 112 |
| Red Lion | city | Colorado | United States | 40.89167 | -102.67639 | 3651 | 193 |
| Red Mountain | city | Colorado | United States | 37.90361 | -107.70194 | 11866 | 145 |
| Red Wing | city | Colorado | United States | 37.73611 | -105.28944 | 7772 | 56 |
| Redlands | city | Colorado | United States | 39.07889 | -108.635 | 4698 | 9726 |
| Redmesa | city | Colorado | United States | 37.09444 | -108.16972 | 6499 | 392 |
| Redmond | city | Colorado | United States | 40.47889 | -105.04028 | 4934 | 16774 |
| Reds Place | city | Colorado | United States | 40.73056 | -105.87111 | 8474 | 112 |
| Redstone | city | Colorado | United States | 39.18083 | -107.23917 | 7322 | 404 |
| Redvale | city | Colorado | United States | 38.175 | -108.41667 | 6397 | 105 |
| Reilly Canyon | city | Colorado | United States | 37.25444 | -104.70944 | 7345 | 198 |
| Resurrection Mill | city | Colorado | United States | 39.23528 | -106.27639 | 10511 | 3392 |
| Rex | city | Colorado | United States | 40.78889 | -105.17778 | 5761 | 465 |
| Rexford historical | city | Colorado | United States | 39.53389 | -105.89528 | 12247 | 1918 |
| Rhone | city | Colorado | United States | 39.12667 | -108.67778 | 4504 | 4146 |
| Richfield | city | Colorado | United States | 37.27778 | -105.94444 | 7565 | 807 |
| Rico | city | Colorado | United States | 37.69278 | -108.02972 | 8999 | 95 |
| Ridgewood | city | Colorado | United States | 39.96583 | -105.42306 | 7978 | 1820 |
| Ridgway | city | Colorado | United States | 38.15278 | -107.76111 | 6998 | 257 |
| Rifle | city | Colorado | United States | 39.53472 | -107.7825 | 5390 | 885 |
| Rinn | city | Colorado | United States | 40.13889 | -104.99833 | 4885 | 4014 |
| Rio Blanco | city | Colorado | United States | 39.73778 | -107.94472 | 7598 | 478 |
| Riverdale | city | Colorado | United States | 38.05861 | -103.31611 | 3969 | 565 |
| Riverside | city | Colorado | United States | 38.93833 | -106.18333 | 8398 | 505 |
| Riverside | city | Colorado | United States | 40.17556 | -105.43667 | 7621 | 216 |
| Riverview | city | Colorado | United States | 39.3975 | -105.2675 | 6909 | 1139 |
| Robb | city | Colorado | United States | 40.1025 | -102.37139 | 3792 | 187 |
| Roberta | city | Colorado | United States | 37.99639 | -103.67528 | 4146 | 2487 |
| Robinson Place | city | Colorado | United States | 40.40583 | -108.98528 | 8038 | 14 |
| Rock Creek Pprk | city | Colorado | United States | 38.7025 | -104.83861 | 6302 | 4143 |
| Rock Crossing | city | Colorado | United States | 37.77 | -104.12361 | 4917 | 38 |
| Rockdale | city | Colorado | United States | 38.99139 | -106.41111 | 10390 | 504 |
| Rockland | city | Colorado | United States | 40.51056 | -102.71944 | 4107 | 98 |
| Rockport | city | Colorado | United States | 40.89861 | -104.79611 | 5639 | 75 |
| Rockvale | city | Colorado | United States | 38.11944 | -105.16389 | 9199 | 173 |
| Rockwood | city | Colorado | United States | 37.49083 | -107.80139 | 7322 | 607 |
| Rocky | city | Colorado | United States | 39.86083 | -105.24694 | 6148 | 10997 |
| Rocky Ford | city | Colorado | United States | 38.0525 | -103.71972 | 4179 | 4129 |
| Roe | city | Colorado | United States | 38.53778 | -107.94417 | 5597 | 3134 |
| Rogers Mesa | city | Colorado | United States | 38.77917 | -107.7925 | 5419 | 1125 |
| Roggen | city | Colorado | United States | 40.1675 | -104.37167 | 4714 | 327 |
| Rolla | city | Colorado | United States | 39.86917 | -104.89083 | 5111 | 42421 |
| Rollinsville | city | Colorado | United States | 39.91722 | -105.50056 | 8595 | 1510 |
| Romeo | city | Colorado | United States | 37.17222 | -105.98472 | 7713 | 1567 |
| Romley historical | city | Colorado | United States | 38.675 | -106.36944 | 11040 | 281 |
| Rosedale | city | Colorado | United States | 39.64 | -105.3825 | 7398 | 6146 |
| Rosedale | city | Colorado | United States | 40.38528 | -104.69806 | 4675 | 60992 |
| Rosemont | city | Colorado | United States | 38.74222 | -104.95639 | 9855 | 2348 |
| Rosevale | city | Colorado | United States | 39.06 | -108.57972 | 4586 | 46217 |
| Rosita | city | Colorado | United States | 38.09722 | -105.33556 | 9097 | 173 |
| Roswell | city | Colorado | United States | 38.87361 | -104.81889 | 6177 | 156549 |
| Roundup Junction | city | Colorado | United States | 37.48278 | -108.16167 | 10308 | 330 |
| Rouse | city | Colorado | United States | 37.49083 | -104.71111 | 6797 | 232 |
| Rowena | city | Colorado | United States | 40.07694 | -105.38889 | 8254 | 2190 |
| Roxborough Park | city | Colorado | United States | 39.47389 | -105.08472 | 5748 | 2004 |
| Roy | city | Colorado | United States | 40.10972 | -104.565 | 4999 | 501 |
| Ruby | city | Colorado | United States | 38.86611 | -107.095 | 10731 | 142 |
| Ruby historical | city | Colorado | United States | 39.02083 | -106.60861 | 11732 | 567 |
| Ruedi historical | city | Colorado | United States | 39.36639 | -106.7975 | 7683 | 805 |
| Rugby | city | Colorado | United States | 37.47 | -104.66444 | 6525 | 129 |
| Rulison | city | Colorado | United States | 39.49722 | -107.94 | 5196 | 540 |
| Rush | city | Colorado | United States | 38.84 | -104.09167 | 5964 | 247 |
| Russell | city | Colorado | United States | 37.55528 | -105.28722 | 8661 | 117 |
| Russell Gulch | city | Colorado | United States | 39.77861 | -105.53639 | 9704 | 2955 |
| Rustic | city | Colorado | United States | 40.58028 | -105.69944 | 11030 | 406 |
| Ruxton | city | Colorado | United States | 37.74806 | -103.14611 | 4261 | 42 |
| Rye | city | Colorado | United States | 37.92361 | -104.92972 | 6748 | 453 |
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