California cities starting with R
- Ramona, CA 22
- Rancho Cordova, CA 36
- Rancho Cucamonga, CA 64
- Rancho Palos Verdes, CA 8
- Rancho Santa Fe, CA 5
- Rancho Santa Margarita, CA 13
- Red Bluff, CA 25
- Redding, CA 74
- Redlands, CA 67
- Redondo Beach, CA 41
- Redwood City, CA 44
- Reedley, CA 25
- Reseda, CA 10
- Rialto, CA 55
- Richmond, CA 76
- Ridgecrest, CA 31
- Rio Linda, CA 11
- Rio Vista, CA 12
- Ripon, CA 17
- Riverbank, CA 17
- Riverdale, CA 7
- Riverside, CA 233
- Rocklin, CA 33
- Rodeo, CA 9
- Rohnert Park, CA 21
- Rolling Hills Estates, CA 8
- Rosamond, CA 10
- Rosedale, CA 12
- Rosemead, CA 23
- Roseville, CA 58
- Rowland Heights, CA 16