| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Arata, Trenel | L6385 |
| Postal/ZIP Codes in Campo Salusso, Trenel | L6369 XAB |
| Postal/ZIP Codes in Colonia Migliori, Trenel | L6367 XAD |
| Postal/ZIP Codes in Lote 8 Escuela 141, Trenel | L6369 XAC |
| Postal/ZIP Codes in Metileo, Trenel | L6367 |
| Postal/ZIP Codes in Ministro Orlando, Trenel | L6367 XAB |
| Postal/ZIP Codes in San Joaquin Metileo, Trenel | L6367 XAE |
| Postal/ZIP Codes in Trenel, Trenel | L6369 |
| Postal/ZIP Codes in Zona Rural, Trenel | L6369 XAA |