| Ort | Postleitzahl |
|---|---|
| Bihumbe, Twumba | None |
| Bivumu, Twumba | None |
| Cyamaraba, Twumba | None |
| Duhati, Twumba | None |
| Gakuta, Twumba | None |
| Gashiha, Twumba | None |
| Gatema, Twumba | None |
| Gisovu, Twumba | None |
| Gitabura, Twumba | None |
| Kaganda, Twumba | None |
| Karambo, Twumba | None |
| Karumbi, Twumba | None |
| Kavumu, Twumba | None |
| Kibumbwe, Twumba | None |
| Murehe, Twumba | None |
| Muronzi, Twumba | None |
| Mwumba, Twumba | None |
| Ngiga, Twumba | None |
| Nyabubare, Twumba | None |
| Nyakabingo, Twumba | None |
| Nyakiyabo, Twumba | None |
| Nyarubuye, Twumba | None |
| Nyarutugara, Twumba | None |
| Nyaruyaga, Twumba | None |
| Nyirabununu, Twumba | None |
| Rugeyo, Twumba | None |