| Place | Post Code |
|---|---|
| Mayaso, Biriwa | None |
| Mayobi, Biriwa | None |
| Moi, Biriwa | None |
| Moribia, Biriwa | None |
| Nagafaii, Biriwa | None |
| Sakutan, Biriwa | None |
| Samiya, Biriwa | None |
| Sendugu, Biriwa | None |
| Senguinya, Biriwa | None |
| Senkuya, Biriwa | None |
| Serafula, Biriwa | None |
| Sinegal, Biriwa | None |
| Tawnkawnba, Biriwa | None |
| Tekea, Biriwa | None |
| Wari, Biriwa | None |
| Yongaro, Biriwa | None |