| Place | Postal Code |
|---|---|
| Postal/ZIP Codes in Amorinha, Ibaiti | 84910-000 |
| Postal/ZIP Codes in Euzébio de Oliveira, Ibaiti | 84912-000 |
| Postal/ZIP Codes in Ibaiti, Ibaiti | 84900-000 |
| Postal/ZIP Codes in Vassoural, Ibaiti | 84916-000 |
| Postal/ZIP Codes in Vila Guay, Ibaiti | 84914-000 |