Frontera zip code
| Zip code | Settlement | Type | City | Zone |
|---|---|---|---|---|
| 25644 | Diana Laura Riojas de Colosio | Colonia | Frontera | Rural |
| 25810 | Doctor Esteban Martínez | Colonia | - | Rural |
| Zip code | Settlement | Type | City | Zone |
|---|---|---|---|---|
| 25644 | Diana Laura Riojas de Colosio | Colonia | Frontera | Rural |
| 25810 | Doctor Esteban Martínez | Colonia | - | Rural |