Towns
| State | City/Town | Town Title |
|---|---|---|
| California | Redwood Valley | Redwood Valley, CA |
| California | Reedley | Reedley, CA |
| California | Represa | Represa, CA |
| California | Rescue | Rescue, CA |
| California | Reseda | Reseda, CA |
| California | Rialto | Rialto, CA |
| California | Richgrove | Richgrove, CA |
| California | Richmond | Richmond, CA |
| California | Richvale | Richvale, CA |
| California | Ridgecrest | Ridgecrest, CA |
| California | Rimforest | Rimforest, CA |
| California | Rio Del Mar | Rio Del Mar, CA |
| California | Rio Dell | Rio Dell, CA |
| California | Rio Linda | Rio Linda, CA |
| California | Rio Nido | Rio Nido, CA |
| California | Rio Oso | Rio Oso, CA |
| California | Rio Vista | Rio Vista, CA |
| California | Ripon | Ripon, CA |
| California | River Pines | River Pines, CA |
| California | Riverbank | Riverbank, CA |
| California | Riverdale | Riverdale, CA |
| California | Riverside | Riverside, CA |
| California | Robbins | Robbins, CA |
| California | Rocklin | Rocklin, CA |
| California | Rodeo | Rodeo, CA |