| Place | Postal Code |
|---|---|
| Gisenyi, Mahama | None |
| Kamombo, Mahama | None |
| Kanshongwe, Mahama | None |
| Kigongi, Mahama | None |
| Kigufi, Mahama | None |
| Mahama, Mahama | None |
| Mwizinga, Mahama | None |
| Mwoga, Mahama | None |
| Paysannat E, Mahama | None |
| Paysannat K, Mahama | None |
| Paysannat L, Mahama | None |
| Paysannat M, Mahama | None |
| Saruhembe, Mahama | None |
| Yeri, Mahama | None |