| Place | Post Code |
|---|---|
| Bakida, Helumo | 95779 |
| Biniha, Helumo | 95779 |
| Biniha Selatan, Helumo | 95779 |
| Biniha Timur, Helumo | 95779 |
| Duminanga, Helumo | 95779 |
| Halabolu, Helumo | 95779 |
| Motolohu, Helumo | 95779 |
| Pangia, Helumo | 95779 |
| Sinandaka, Helumo | 95779 |
| Soputa, Helumo | 95779 |
| Trans Patoa, Helumo | 95779 |