- Riverton
- Riverview Mobile Home Estates
- Robert Hutt Congregate Housing
- Robertsville
- Rock Island
- Rock Island
- Rock Landing
- Rock Raymond
- Rock Ridge
- Rockfall
- Rockland
- Rocky Glen
- Rocky Hill
- Rogers
- Rogers Island
- Romford
- Roseland Park
- Round Beach
- Round Island
- Round Rock
- Rowayton
- Roxbury
- Roxbury
- Roxbury Falls
- Roxbury Station
- Russian Village
- Ridgefield
- Rockville