17 cities
| City | 2026 Pop. ↓ |
|---|---|
| Reynosa | 997,908 |
| Rioverde | 146,908 |
| Ramos Arizpe | 66,554 |
| Rosarito | 65,278 |
| Rio Blanco | 40,611 |
| Rio Grande | 40,077 |
| Rio Grande | 40,077 |
| Rincon de Romos | 30,969 |
| Reforma | 29,345 |
| Rancho La Gloria | 26,860 |
| Rio de Teapa | 26,500 |
| Rodolfo Sanchez Taboada | 22,957 |
| Romita | 22,248 |
| Reyes Acozac | 21,910 |
| Ruiz | 16,039 |
| Real del Valle (El Paraiso) [Fraccionamiento] | 13,949 |
| Rincon de Tamayo | 10,324 |