| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Rago | city | Colorado | United States | 40.00 | -103.42 | 4589 | |
| Rainbow Hills | city | Colorado | United States | 39.71 | -105.34 | 7585 | |
| Rainbow Ridge | city | Colorado | United States | 39.79 | -105.13 | 5423 | |
| Ralston Estates | city | Colorado | United States | 39.82 | -105.15 | 5869 | |
| Ralston Valley | city | Colorado | United States | 39.83 | -105.15 | 5869 | |
| Ramah | city | Colorado | United States | 39.12 | -104.17 | 6095 | |
| Rand | city | Colorado | United States | 40.45 | -106.18 | 8707 | |
| Randall | city | Colorado | United States | 38.10 | -103.58 | 4189 | |
| Rangely | city | Colorado | United States | 40.09 | -108.80 | 5354 | |
| Raymer | city | Colorado | United States | 40.61 | -103.84 | 5029 | |
| Raymond | city | Colorado | United States | 40.15 | -105.46 | 8389 | |
| Read | city | Colorado | United States | 38.77 | -107.98 | 5088 | |
| Red Cliff | city | Colorado | United States | 39.51 | -106.37 | 9228 | |
| Red Feather Lakes | city | Colorado | United States | 40.80 | -105.59 | 8389 | |
| Red Lion | city | Colorado | United States | 40.89 | -102.68 | 3651 | |
| Red Wing | city | Colorado | United States | 37.74 | -105.29 | 7772 | |
| Redlands | city | Colorado | United States | 39.08 | -108.64 | 5029 | |
| Redmesa | city | Colorado | United States | 37.09 | -108.17 | 6709 | |
| Redmond | city | Colorado | United States | 40.48 | -105.04 | 5029 | |
| Reds Place | city | Colorado | United States | 40.73 | -105.87 | 8474 | |
| Redstone | city | Colorado | United States | 39.18 | -107.24 | 7549 | |
| Redvale | city | Colorado | United States | 38.17 | -108.42 | 6709 | |
| Reilly Canyon | city | Colorado | United States | 37.25 | -104.71 | 7549 | |
| Resurrection Mill | city | Colorado | United States | 39.24 | -106.28 | 10908 | |
| Rex | city | Colorado | United States | 40.79 | -105.18 | 5869 | |
| Rexford (historical) | city | Colorado | United States | 39.53 | -105.90 | 11948 | |
| Rhone | city | Colorado | United States | 39.13 | -108.68 | 4504 | |
| Richfield | city | Colorado | United States | 37.28 | -105.95 | 7565 | |
| Richlawn Hills | city | Colorado | United States | 39.47 | -104.78 | 5997 | |
| Rico | city | Colorado | United States | 37.69 | -108.03 | 9228 | |
| Ridgewood | city | Colorado | United States | 39.97 | -105.42 | 8389 | |
| Ridgewood Park | city | Colorado | United States | 39.59 | -105.02 | 5406 | |
| Ridgway | city | Colorado | United States | 38.15 | -107.76 | 6998 | |
| Rifle | city | Colorado | United States | 39.53 | -107.78 | 5390 | |
| Rinn | city | Colorado | United States | 40.14 | -105.00 | 5029 | |
| Rio Blanco | city | Colorado | United States | 39.74 | -107.95 | 7598 | |
| Riva Chase | city | Colorado | United States | 39.70 | -105.26 | 7549 | |
| Riverdale | city | Colorado | United States | 38.06 | -103.32 | 4189 | |
| Riverside | city | Colorado | United States | 38.94 | -106.18 | 8398 | |
| Riverside | city | Colorado | United States | 40.18 | -105.44 | 7621 | |
| Riverview | city | Colorado | United States | 39.40 | -105.27 | 6909 | |
| Robb | city | Colorado | United States | 40.10 | -102.37 | 4189 | |
| Roberta | city | Colorado | United States | 38.00 | -103.68 | 4189 | |
| Robinson Place | city | Colorado | United States | 40.41 | -108.99 | 8389 | |
| Rock Creek | city | Colorado | United States | 39.94 | -105.16 | 5869 | |
| Rock Creek Park | city | Colorado | United States | 38.70 | -104.84 | 6709 | |
| Rock Crossing | city | Colorado | United States | 37.77 | -104.12 | 5029 | |
| Rockdale | city | Colorado | United States | 38.99 | -106.41 | 10390 | |
| Rockland | city | Colorado | United States | 40.51 | -102.72 | 4189 | |
| Rockport | city | Colorado | United States | 40.90 | -104.80 | 5869 | |
| Rockvale | city | Colorado | United States | 38.37 | -105.16 | 5869 | |
| Rockwood | city | Colorado | United States | 37.49 | -107.80 | 7549 | |
| Rocky Ford | city | Colorado | United States | 38.05 | -103.72 | 4189 | |
| Roe | city | Colorado | United States | 38.54 | -107.94 | 5869 | |
| Rogers Mesa | city | Colorado | United States | 38.78 | -107.79 | 5196 | |
| Roggen | city | Colorado | United States | 40.17 | -104.37 | 5029 | |
| Rolla | city | Colorado | United States | 39.87 | -104.89 | 5111 | |
| Rolling Hills | city | Colorado | United States | 39.77 | -105.12 | 5456 | |
| Rollinsville | city | Colorado | United States | 39.92 | -105.50 | 8595 | |
| Romeo | city | Colorado | United States | 37.17 | -105.99 | 7713 | |
| Romley (historical) | city | Colorado | United States | 38.67 | -106.37 | 11040 | |
| Rosedale | city | Colorado | United States | 39.64 | -105.38 | 7549 | |
| Rosedale | city | Colorado | United States | 40.39 | -104.70 | 5029 | |
| Rosemont | city | Colorado | United States | 38.74 | -104.96 | 10068 | |
| Rosevale | city | Colorado | United States | 39.06 | -108.58 | 4586 | |
| Rosita | city | Colorado | United States | 38.10 | -105.34 | 9228 | |
| Roswell | city | Colorado | United States | 38.87 | -104.82 | 6177 | |
| Roundup Junction | city | Colorado | United States | 37.48 | -108.16 | 10308 | |
| Rouse | city | Colorado | United States | 37.49 | -104.71 | 6797 | |
| Rowena | city | Colorado | United States | 40.08 | -105.39 | 8389 | |
| Roxborough | city | Colorado | United States | 39.47 | -105.09 | 5997 | |
| Roxborough Park | city | Colorado | United States | 39.47 | -105.09 | 5869 | |
| Roxborough Park (Colorado) | city | Colorado | United States | 39.47 | -105.09 | 5869 | |
| Roxborough Park, Colorado | city | Colorado | United States | 39.47 | -105.09 | 5869 | |
| Roy | city | Colorado | United States | 40.11 | -104.57 | 5029 | |
| Ruby | city | Colorado | United States | 38.87 | -107.10 | 10908 | |
| Ruby (historical) | city | Colorado | United States | 39.02 | -106.61 | 11748 | |
| Ruby Hill | city | Colorado | United States | 39.69 | -105.01 | 5282 | |
| Ruedi (historical) | city | Colorado | United States | 39.37 | -106.80 | 7683 | |
| Rugby | city | Colorado | United States | 37.47 | -104.66 | 6709 | |
| Rulison | city | Colorado | United States | 39.50 | -107.94 | 5196 | |
| Rush | city | Colorado | United States | 38.84 | -104.09 | 5964 | |
| Russell | city | Colorado | United States | 37.56 | -105.29 | 8595 | |
| Russell Gulch | city | Colorado | United States | 39.78 | -105.54 | 10068 | |
| Rustic | city | Colorado | United States | 40.70 | -105.58 | 7549 | |
| Ruxton | city | Colorado | United States | 37.75 | -103.15 | 4261 | |
| Rye | city | Colorado | United States | 37.92 | -104.93 | 6748 |