- R Flourney
- Rabbit Island
- Rackerby
- Raco
- Radec
- Radnor
- Radum
- Raffetto
- Ragtown
- Rainbow
- Rainbow Wells
- Ralph
- Ralph Leggett Place
- Ramada
- Ramal
- Ramirez
- Ramona Bowl
- Rampart
- Ramsey
- Ramsey
- Ramsey Crossing
- Ranch House Estates
- Ranch Mobile Home Park
- Rancherie Island
- Ranchita
- Rancho del Arroyo Mobile Home Park
- Rancho del Avion Capistrano Mobile Home Park
- Rancho Del Campo
- Rancho del Sol
- Rancho Dos Palmas