| Lieu | Code postal |
|---|---|
| Dukor Gbondo, Upper Guma | None |
| Gbongoma, Upper Guma | None |
| Gondama, Upper Guma | None |
| Koyama, Upper Guma | None |
| Memolahun, Upper Guma | None |
| Mengata, Upper Guma | None |
| Sowata, Upper Guma | None |
| Vanita, Upper Guma | None |
| Yormbu, Upper Guma | None |
| Codes postaux en Vahun | |
|---|---|
| Central Guma, Vahun | |
| Lower Guma, Vahun | |
| Upper Guma, Vahun | |