16 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Rio Rico | Santa Cruz County | 22,452 |
| Rincon Valley | Pima County | 6,015 |
| Red Rock | Pinal County | 3,952 |
| Rio Verde | Maricopa County | 2,377 |
| Red Lake | Coconino County | 2,171 |
| Rainbow City | Gila County | 886 |
| Roosevelt Estates | Gila County | 805 |
| Round Valley | Gila County | 507 |
| Round Rock | Apache County | 486 |
| Red Mesa | Apache County | 468 |
| Rough Rock | Apache County | 461 |
| Rancho Mesa Verde | Yuma County | 434 |
| Rock Point | Apache County | 350 |
| Red Rock | Pinal County | 94 |
| Rye | Gila County | 27 |
| Rock House | Gila County | 10 |