Towns
| State | City/Town | Town Title |
|---|---|---|
| California | Rackerby | Rackerby, CA |
| California | Rail Road Flat | Rail Road Flat, CA |
| California | Raisin | Raisin, CA |
| California | Raisin City | Raisin City, CA |
| California | Ramona | Ramona, CA |
| California | Ranchita | Ranchita, CA |
| California | Rancho Cordova | Rancho Cordova, CA |
| California | Rancho Cucamonga | Rancho Cucamonga, CA |
| California | Rancho Mirage | Rancho Mirage, CA |
| California | Rancho Palos Verdes | Rancho Palos Verdes, CA |
| California | Rancho Santa Fe | Rancho Santa Fe, CA |
| California | Rancho Santa Margarita | Rancho Santa Margarita, CA |
| California | Randsburg | Randsburg, CA |
| California | Ravendale | Ravendale, CA |
| California | Raymond | Raymond, CA |
| California | Red Bluff | Red Bluff, CA |
| California | Red Mountain | Red Mountain, CA |
| California | Redcrest | Redcrest, CA |
| California | Redding | Redding, CA |
| California | Redlands | Redlands, CA |
| California | Redondo Beach | Redondo Beach, CA |
| California | Redway | Redway, CA |
| California | Redwood City | Redwood City, CA |
| California | Redwood Estates | Redwood Estates, CA |
| California | Redwood Shores | Redwood Shores, CA |