Towns
| State | City/Town | Town Title |
|---|---|---|
| California | Rohnert Park | Rohnert Park, CA |
| California | Rolling Hills | Rolling Hills, CA |
| California | Rolling Hills Estates | Rolling Hills Estates, CA |
| California | Rosamond | Rosamond, CA |
| California | Rosemead | Rosemead, CA |
| California | Roseville | Roseville, CA |
| California | Ross | Ross, CA |
| California | Rough And Ready | Rough And Ready, CA |
| California | Round Mountain | Round Mountain, CA |
| California | Rowland Heights | Rowland Heights, CA |
| California | Rumsey | Rumsey, CA |
| California | Running Springs | Running Springs, CA |
| California | Rutherford | Rutherford, CA |
| California | Ryde | Ryde, CA |
| California | Sac | Sac, CA |
| California | Sacramento | Sacramento, CA |
| California | Saint Helena | Saint Helena, CA |
| California | Salida | Salida, CA |
| California | Salinas | Salinas, CA |
| California | Salt Lake City | Salt Lake City, CA |
| California | Salton City | Salton City, CA |
| California | Salvador | Salvador, CA |
| California | Salyer | Salyer, CA |
| California | Samoa | Samoa, CA |
| California | San Andreas | San Andreas, CA |