- Reed Corners
- Reed Corners
- Reedville
- Reedy Island
- Reeves Park
- Refuge Island
- Regatta View
- Regency Estates Trailer Park
- Rego Park
- Reidsville
- Relius
- Remington Corners
- Remsenburg
- Remsenburg-Speonk
- Renchans
- Renee Gardens
- Reniff
- Rensselaerville
- Renwick
- Residence Park
- Resort
- Resort Island
- Result
- Retirement Estates
- Retsof
- Rexford
- Rexleigh
- Rexville
- Reydon Shores
- Reynales Basin