16 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Rio Rico | Santa Cruz County | 22,068 |
| Rincon Valley | Pima County | 5,855 |
| Red Rock Pinal County | Pinal County | 3,924 |
| Rio Verde | Maricopa County | 2,575 |
| Red Lake | Coconino County | 1,875 |
| Roosevelt Estates | Gila County | 775 |
| Rancho Mesa Verde | Yuma County | 593 |
| Round Rock | Apache County | 540 |
| Round Valley | Gila County | 511 |
| Rainbow City | Gila County | 503 |
| Red Mesa | Apache County | 498 |
| Rock Point | Apache County | 451 |
| Rough Rock | Apache County | 425 |
| Rock House | Gila County | 144 |
| Red Rock | Pinal County | 94 |
| Rye | Gila County | 22 |