| Place | Post Code |
|---|---|
| Bukaka, Kotabunan | 95782 |
| Bulawan, Kotabunan | 95782 |
| Bulawan Dua, Kotabunan | 95782 |
| Bulawan Satu, Kotabunan | 95782 |
| Buyat, Kotabunan | 95782 |
| Buyat Barat, Kotabunan | 95782 |
| Buyat I, Kotabunan | 95782 |
| Buyat II, Kotabunan | 95782 |
| Buyat Selatan, Kotabunan | 95782 |
| Buyat Tengah, Kotabunan | 95782 |
| Kotabunan, Kotabunan | 95782 |
| Kotabunan Barat, Kotabunan | 95782 |
| Kotabunan Selatan, Kotabunan | 95782 |
| Paret, Kotabunan | 95782 |
| Paret Timur, Kotabunan | 95782 |