| Locality | Post Code |
|---|---|
| Sayaco, Choya | G4203 XAE |
| Serrano Muerto, Choya | G4230 XAB |
| Shishi Pozo, Choya | G4205 XAB |
| Sinchi Caña, Choya | G4203 XAF |
| Sol de Mayo, Choya | G4203 XAG |
| Suncho Pozo, Choya | G4230 XAC |
| Suncho Pujio, Choya | G4230 XAE |
| Taco Quinka, Choya | G4230 XAF |
| Tapso, Choya | G4230 XCF |
| Tres Bajadas, Choya | G4230 XBJ |
| Troncos Quemados, Choya | G4230 XAG |
| Villa Adela, Choya | G4230 XAD |
| Villa Coinor, Choya | G4230 XAX |
| Villa Elvira, Choya | G4205 XAD |
| Yeso Alto, Choya | G4203 XAH |
| Zorro Huarcuna, Choya | G4237 XAB |
| 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 | |