- Redgate
- Redgate
- Redhill
- Redhill Estates
- Redhouse
- Redland
- Reece Heights
- Reed Bird Island
- Reeds at Bayview Mobile Home Park
- Reeds Village
- Reedy Island
- Reedy Island (historical)
- Reels Mill
- Reese
- Reese Manor
- Reeses Corner
- Regal Estastes
- Regency Estates
- Regency Manor Mobile Home Park
- Regwood
- Rehobeth
- Reichs Ford Estates
- Reid
- Reids Grove
- Reisterstown
- Relay
- Relda Square
- Reliance
- Remington Farms
- Remsberg Acres