| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Balanataman, Rabaul | 611 |
| Postal/ZIP Codes in Kombiu, Rabaul | 611 |
| Postal/ZIP Codes in Rabaul, Rabaul | 611 |
| Postal/ZIP Codes in Watom Island, Rabaul | 611 |
| Postal Codes in East New Britain | |
|---|---|
| Postal/ZIP Codes in Rabaul | Postal/ZIP Codes in Pomio |
| Postal/ZIP Codes in Kokopo | Postal/ZIP Codes in Gazelle |