| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Ialibu Basin, Imbonggu | |
| Postal/ZIP Codes in Imbongu, Imbonggu | |
| Postal/ZIP Codes in Lower Mendi, Imbonggu |
| Postal Codes in Southern Highlands | |
|---|---|
| Postal/ZIP Codes in Nipa-Kutubu | Postal/ZIP Codes in Mendi-Munihu |
| Postal/ZIP Codes in Kagua-Erave | Postal/ZIP Codes in Imbonggu |
| Postal/ZIP Codes in Ialibu-Pangia | |