| Locality | Post Code |
|---|---|
| Puesto Dichoso, General San Martín | F5471 XAN |
| San Antonio, General San Martín | F5473 XAU |
| San Nicolás, General San Martín | F5473 XAL |
| San Rafael, General San Martín | F5471 XBF |
| San Solano, General San Martín | F5475 XAG |
| Santo Domingo, General San Martín | F5473 XAV |
| Siempre Verde, General San Martín | F5473 XAW |
| Ulapes, General San Martín | F5473 |
| Villa Nidia, General San Martín | F5473 XAX |