| Locality | Post Code |
|---|---|
| Dique Toma, Rivadavia | J5407 XAA |
| Marquesado, Rivadavia | J5407 |
| Paraje Bebida, Rivadavia | J5677 |
| Río Saso, Rivadavia | J5407 XAB |
| Rivadavia, Rivadavia | J5406 |
| Villa Obrera, Rivadavia | J5407 XAC |
| 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 | |