| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Riachuelo | city | Tamaulipas | Mexico | 22.86 | -99.11 | 252 | 1581 |
| Riachuelos | city | Tamaulipas | Mexico | 22.86 | -99.11 | 252 | 1581 |
| Ricardo Flores Magon | city | Tamaulipas | Mexico | 22.45 | -97.91 | 42 | 27563 |
| Ricardo Flores Magón | city | Tamaulipas | Mexico | 22.73 | -99.41 | 1669 | 601 |
| Ricardo Flores Magón | city | Tamaulipas | Mexico | 23.79 | -99.01 | 830 | 4337 |
| Ricardo Flores Magón | city | Tamaulipas | Mexico | 22.51 | -98.80 | 190 | 4457 |
| Ricardo García | city | Tamaulipas | Mexico | 23.24 | -99.68 | 5196 | 314 |
| Rincon | city | Tamaulipas | Mexico | 26.87 | -99.30 | 311 | 6503 |
| Rincon El Toro | city | Tamaulipas | Mexico | 25.52 | -97.68 | 22 | 1639 |
| Rincon Murillo | city | Tamaulipas | Mexico | 24.53 | -99.05 | 2509 | 298 |
| Rincon de Las Montanas | city | Tamaulipas | Mexico | 23.72 | -99.11 | 1079 | 87441 |
| Rincon de Palomas | city | Tamaulipas | Mexico | 23.21 | -98.16 | 1174 | 298 |
| Rincon de Tamatan | city | Tamaulipas | Mexico | 23.72 | -99.17 | 1204 | 85635 |
| Rincon de Varas | city | Tamaulipas | Mexico | 22.72 | -99.32 | 1167 | 596 |
| Rincon de los Indios | city | Tamaulipas | Mexico | 26.80 | -99.48 | 341 | 147 |
| Rinconada | city | Tamaulipas | Mexico | 24.77 | -98.00 | 32 | 596 |
| Rinconada la Bonita | city | Tamaulipas | Mexico | 26.19 | -98.99 | 252 | 652 |
| Rincón el Ebanito | city | Tamaulipas | Mexico | 25.77 | -97.22 | 3 | 1051 |
| Rio Escondido | city | Tamaulipas | Mexico | 24.41 | -98.57 | 951 | 415 |
| Rio Frio | city | Tamaulipas | Mexico | 22.84 | -99.02 | 180 | 13126 |
| Rio Hondo | city | Tamaulipas | Mexico | 24.98 | -98.76 | 830 | 298 |
| Rio Salado | city | Tamaulipas | Mexico | 26.79 | -99.43 | 318 | 126 |
| Rio Tarniahua | city | Tamaulipas | Mexico | 22.50 | -98.06 | 141 | 4384 |
| Rio Verde | city | Tamaulipas | Mexico | 23.67 | -98.63 | 830 | 149 |
| Rio Verde | city | Tamaulipas | Mexico | 22.91 | -98.09 | 830 | 13059 |
| Risco Amarillo | city | Tamaulipas | Mexico | 23.42 | -98.25 | 941 | 447 |
| Riverena | city | Tamaulipas | Mexico | 26.09 | -98.30 | 121 | 94584 |