| Place | Postal Code |
|---|---|
| Embui, Masii | 90100 |
| Kithangaini, Masii | 90100 |
| Masii, Masii | 90101 |
| Mbaani, Masii | 90100 |
| Mithini, Masii | 90100 |
| Utithini, Masii | 90100 |
| Vyulya, Masii | 90100 |
| Postal Codes in Mwala | |
|---|---|
| Kibauni, Mwala | |
| Makutano/Mwala, Mwala | |
| Masii, Mwala | |
| Mbiuni, Mwala | |
| Muthetheni, Mwala | |
| Wamunyu, Mwala | |