| Locality | Post Code |
|---|---|
| Villa Rachel, Rawson | J5425 XAL |
| Zavalla, Rawson | J5425 XAM |
| San Juan Postal Codes | |
|---|---|
| Zonda | Valle Fértil |
| Ullum | Sarmiento |
| Santa Lucía | San Martín |
| Rivadavia | Rawson |
| Pocito | Jáchal |
| Iglesia | Chimbas |
| Caucete | Capital |
| Calingasta | Angaco |
| Albardón | 9 de Julio |
| 25 de Mayo | |