| Place | Post Code |
|---|---|
| Rotalawela, Mahiyanganaya | None |
| Senanigama, Mahiyanganaya | None |
| Sorabora, Mahiyanganaya | None |
| Thalangamuwa, Mahiyanganaya | None |
| Theldeniyaya, Mahiyanganaya | None |
| Ulhitiya, Mahiyanganaya | None |
| Wewatta, Mahiyanganaya | 90716 |
| Wewgampaha, Mahiyanganaya | None |
| Wiranegama, Mahiyanganaya | None |