San Diego de la Unión zip code
| Zip code | Settlement | Type | City | Zone |
|---|---|---|---|---|
| 37866 | Ojo Ciego (San José de la Purísima) | Hacienda | - | Rural |
| 37867 | Ojo de Puerco | Ranchería | - | Rural |
| Zip code | Settlement | Type | City | Zone |
|---|---|---|---|---|
| 37866 | Ojo Ciego (San José de la Purísima) | Hacienda | - | Rural |
| 37867 | Ojo de Puerco | Ranchería | - | Rural |