| Locality | Post Code |
|---|---|
| Santa Clara, General Pedernera | D5730 XBD, D5831 XAU |
| Santa Felisa, General Pedernera | D5831 XAV |
| Santa Isabel, General Pedernera | D5831 XAW |
| Tasto, General Pedernera | D5731 XAW |
| Tres Esquinas, General Pedernera | D5730 XBJ |
| Villa Mercedes, General Pedernera | D5730, D5732 |
| Villa Reynolds, General Pedernera | D5733 |
| Villa Santiago, General Pedernera | D5730 XAJ |
| Viscacheras, General Pedernera | D5731 XAX |
| San Luis Postal Codes | |
|---|---|
| Libertador General San Martín | La Capital |
| Junín | Gobernador Dupuy |
| General Pedernera | Coronel Pringles |
| Chacabuco | Belgrano |
| Ayacucho | |