| Postal Code | Postal Code Place Name | State | Municipality |
|---|---|---|---|
| 87860 | Américo Villarreal Guerra | Tamaulipas | Mainero |
| 87865 | Emilio Vázquez Gómez (Agua Fría) | Tamaulipas | Mainero |
| 87870 | Magueyes | Tamaulipas | Mainero |
| 87873 | San Luis Hidalgo | Tamaulipas | Mainero |
| 87875 | Emiliano Zapata | Tamaulipas | Mainero |