| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Desamparados, Capital | J5400 XAA |
| Postal/ZIP Codes in Diaz Velez, Capital | J5400 XAG |
| Postal/ZIP Codes in Presbitero Francisco Perez Hernadez, Capital | J5400 XAB |
| Postal/ZIP Codes in San Juan, Capital | J5400, J5402 |
| Postal/ZIP Codes in Trinidad, Capital | J5400 XAC |
| Postal/ZIP Codes in Villa Carolina, Capital | J5400 XAD |
| Postal/ZIP Codes in Villa del Carmen, Capital | J5422 |
| Postal/ZIP Codes in Villa Huasihul, Capital | J5400 XAE |
| Postal/ZIP Codes in Villa Marini, Capital | J5400 XAF |
| Postal/ZIP Codes in Villa Palermo, Capital | J5410 |
| Postal/ZIP Codes in Villa San Isidro, Capital | J5415 XAL |