| Locality | Post Code |
|---|---|
| Nazca, General Roca | X6270 XAE |
| Nicolás Bruzone, General Roca | X6278 |
| Onagoity, General Roca | X6227 XAA |
| Pincén, General Roca | X6271 XAG |
| Ranqueles, General Roca | X6271 XAH |
| Santa Magdalena, General Roca | X6127 XAB |
| Tomas Echenique, General Roca | X6271 XAI |
| Villa Huidobro, General Roca | X6275 |
| Villa Moderna, General Roca | X6275 XAE |
| Villa Sarmiento, General Roca | X6273 XAC |
| Villa Valeria, General Roca | X6273 |
| Watt, General Roca | X6270 XAB |