| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Rainbow | city | Connecticut | United States | 41.92 | -72.69 | 82 | |
| Rawson | city | Connecticut | United States | 41.81 | -72.07 | 830 | |
| Raynham | city | Connecticut | United States | 41.27 | -72.90 | 45 | |
| Redding | city | Connecticut | United States | 41.30 | -73.38 | 830 | |
| Redding Ridge | city | Connecticut | United States | 41.31 | -73.35 | 830 | |
| Reynolds Bridge | city | Connecticut | United States | 41.66 | -73.08 | 400 | |
| Richards Corner | city | Connecticut | United States | 41.48 | -72.91 | 170 | |
| Richards Corner | city | Connecticut | United States | 41.17 | -73.50 | 396 | |
| Ridgebury | city | Connecticut | United States | 41.36 | -73.52 | 830 | |
| Ridgefield | city | Connecticut | United States | 41.28 | -73.50 | 830 | |
| Ridgefield town | city | Connecticut | United States | 41.28 | -73.50 | 830 | |
| Ridgeway | city | Connecticut | United States | 41.07 | -73.56 | 85 | |
| Ridgewood | city | Connecticut | United States | 41.26 | -72.51 | 0 | |
| Ridgewood | city | Connecticut | United States | 41.31 | -72.10 | 22 | |
| Rising Corner | city | Connecticut | United States | 42.04 | -72.71 | 206 | |
| River Glen | city | Connecticut | United States | 41.74 | -72.86 | 213 | |
| Riverbank | city | Connecticut | United States | 41.10 | -73.59 | 242 | |
| Rivercliff | city | Connecticut | United States | 41.19 | -73.10 | 22 | |
| Riverdale | city | Connecticut | United States | 41.56 | -72.58 | 3 | |
| Rivermead Mobile Home Park | city | Connecticut | United States | 41.73 | -72.63 | 42 | |
| Riverside | city | Connecticut | United States | 41.39 | -73.17 | 173 | |
| Riverside | city | Connecticut | United States | 41.03 | -73.58 | 26 | |
| Riverside | city | Connecticut | United States | 41.43 | -73.25 | 400 | |
| Riversville | city | Connecticut | United States | 41.06 | -73.68 | 164 | |
| Riverton | city | Connecticut | United States | 41.96 | -73.02 | 830 | |
| Riverview Mobile Home Estates | city | Connecticut | United States | 41.51 | -73.05 | 200 | |
| Robert Hutt Congregate Housing | city | Connecticut | United States | 41.50 | -73.07 | 830 | |
| Robertsville | city | Connecticut | United States | 41.98 | -73.04 | 830 | |
| Rock Landing | city | Connecticut | United States | 41.50 | -72.52 | 98 | |
| Rock Raymond | city | Connecticut | United States | 41.29 | -73.27 | 347 | |
| Rock Ridge | city | Connecticut | United States | 41.04 | -73.65 | 118 | |
| Rockland | city | Connecticut | United States | 41.41 | -72.66 | 400 | |
| Rockville | city | Connecticut | United States | 41.87 | -72.45 | 830 | |
| Rocky Glen | city | Connecticut | United States | 41.43 | -73.27 | 278 | |
| Rocky Hill | city | Connecticut | United States | 41.66 | -72.64 | 108 | |
| Rogers | city | Connecticut | United States | 41.84 | -71.91 | 298 | |
| Romford | city | Connecticut | United States | 41.68 | -73.29 | 830 | |
| Roseland Park | city | Connecticut | United States | 41.95 | -71.96 | 298 | |
| Round Beach | city | Connecticut | United States | 41.08 | -73.40 | 0 | |
| Rowayton | city | Connecticut | United States | 41.06 | -73.44 | 0 | |
| Roxbury | city | Connecticut | United States | 41.56 | -73.31 | 830 | |
| Roxbury | city | Connecticut | United States | 41.09 | -73.56 | 95 | |
| Roxbury Falls | city | Connecticut | United States | 41.51 | -73.31 | 396 | |
| Roxbury Station | city | Connecticut | United States | 41.56 | -73.33 | 298 | |
| Russian Village | city | Connecticut | United States | 41.45 | -73.25 | 298 |