Villa Unión zip code
| Zip code | Settlement | Type | City | Zone |
|---|---|---|---|---|
| 26605 | Caballo Blanco | Ranchería | - | Rural |
| 26606 | Caballo Blanco | Ranchería | - | Rural |
| 26605 | Casa Blanca | Ranchería | - | Rural |
| 26607 | Casa Blanca | Ranchería | - | Rural |
| 26625 | Casa Blanca | Ranchería | - | Rural |
| 26605 | Casa Blanca Dos | Ranchería | - | Rural |
| 26636 | Celso Frías | Ranchería | - | Rural |
| 26605 | Chupadero | Ranchería | - | Rural |
| 26630 | Ciénega Grande | Ejido | - | Rural |
| 26636 | Conrado Arizpe | Ranchería | - | Rural |
| 26607 | Conrado Martínez | Ranchería | - | Rural |
| 26637 | Crescencio Frías | Ranchería | - | Rural |
| 26605 | Cruz Castillo | Ranchería | - | Rural |
