| Locality | Post Code |
|---|---|
| One Hundred Palms, Riverside | 92274 |
| Palm Desert, Riverside | 92211, 92260 |
| Palm Springs, Riverside | 92262, 92263, 92264 |
| Perris, Riverside | 92570, 92571 |
| Pinyon Pines, Riverside | 92561 |
| Quail Valley, Riverside | 92587 |
| Rancho Belago, Riverside | 92555 |
| Rancho California, Riverside | 92590, 92591, 92592 |
| Rancho Mirage, Riverside | 92270 |
| Ripley, Riverside | 92225 |
| Riverside, Riverside | 92501, 92503, 92504, 92505, 92506, … |
| Romoland, Riverside | 92585 |
| Rubidoux, Riverside | 92519 |
| Sage, Riverside | 92544 |
| San Jacinto, Riverside | 92582, 92583 |
| Sandy Korner, Riverside | 92274 |
| Sky Valley, Riverside | 92241 |
| Smoke Tree, Riverside | 92262 |
| Sun, Riverside | 92584 |
| Sun City, Riverside | 92585, 92586 |
| Temecula, Riverside | 92590, 92591, 92592 |
| Temescal Valley, Riverside | 92883 |
| Thermal, Riverside | 92274 |
| Thousand Palms, Riverside | 92276 |
| Torres Martinez Indian Reservation, Riverside | 92274 |
| Valerie, Riverside | 92274 |