- Redman
- Redondo Beach
- Redway
- Redwood City
- Redwood Corral
- Redwood Estates
- Redwood Grove
- Redwood Junction
- Redwood Lodge
- Redwood Lodge
- Redwood Park
- Redwood Terrace
- Redwood Valley
- Redwoods
- Reed
- Reedley
- Reef Station
- Reeves Place
- Reeves Place
- Regina Heights
- Reilly Heights
- Relief
- Remnoy
- Rendalia
- Reno Junction
- Renoville
- Renshaw Place
- Represa
- Requa
- Rescue