| Locality | Post Code |
|---|---|
| San José, Rivadavia | G2354 XAI |
| San Sebastián, Rivadavia | G2354 XAJ |
| Santa Ana, Rivadavia | G2354 XAY |
| Selva, Rivadavia | G2354 |
| Tres Pozos, Rivadavia | G2354 XAZ |
| Santiago del Estero Postal Codes | |
|---|---|
| Silípica | Sarmiento |
| Salavina | Río Hondo |
| Robles | Rivadavia |
| Quebrachos | Pellegrini |
| Ojo de Agua | Moreno |
| Mitre | Loreto |
| Juan Felipe Ibarra | Jiménez |
| Guasayán | General Taboada |
| General San Martín | Figueroa |
| Copo | Choya |
| Capital | Belgrano |
| Banda | Avellaneda |
| Atamisqui | Alberdi |
| Aguirre | |