| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Anguinán, Chilecito | F5363 |
| Postal/ZIP Codes in Cachiyuyal, Chilecito | F5367 XAB |
| Postal/ZIP Codes in Catinzaco, Chilecito | F5374 XAB |
| Postal/ZIP Codes in Catinzaco Embarcadero Fcgb, Chilecito | F5374 XAC |
| Postal/ZIP Codes in Chilecito, Chilecito | F5360 |
| Postal/ZIP Codes in Guachin, Chilecito | F5367 XAC |
| Postal/ZIP Codes in La Puntilla, Chilecito | F5360, F5367 |
| Postal/ZIP Codes in Los Sarmientos, Chilecito | F5373 AAA, F5373 ABA, F5373 … |
| Postal/ZIP Codes in Malligasta, Chilecito | F5361 |
| Postal/ZIP Codes in Miranda, Chilecito | F5367 XAD |
| Postal/ZIP Codes in Nonogasta, Chilecito | F5372 |
| Postal/ZIP Codes in Samay Huasi, Chilecito | F5360 XAA |
| Postal/ZIP Codes in San Miguel, Chilecito | F5364 |
| Postal/ZIP Codes in San Nicolás, Chilecito | F5360 XAB |
| Postal/ZIP Codes in Sañogasta, Chilecito | F5367 |
| Postal/ZIP Codes in Santa Florentina, Chilecito | F5367 XAA |
| Postal/ZIP Codes in Tilimuqui, Chilecito | F5361 XAA |
| Postal/ZIP Codes in Vichigasta, Chilecito | F5374 XAA |