| Locality | Post Code |
|---|---|
| Atolls, North Bougainville | 355 |
| Buka, North Bougainville | 355 |
| Kunua, North Bougainville | 355 |
| Nissan, North Bougainville | 355 |
| Selau Suir, North Bougainville | 355 |
| Tinputz, North Bougainville | 355 |
| Bougainville Postal Codes | |
|---|---|
| South Bougainville | North Bougainville |
| Central Bougainville | |