| Place | Post Code |
|---|---|
| Belen, Esmeralda | None |
| Esmeralda, Esmeralda | None |
| Peña Peñani, Esmeralda | None |
| Romero Pampa, Esmeralda | None |
| All postal codes in Litoral | |
|---|---|
| Cruz de Machacamarca, Litoral | |
| Escara, Litoral | |
| Esmeralda, Litoral | |
| Huachacalla, Litoral | |
| Yunguyo del Litoral, Litoral | |