| Place | Postal Code |
|---|---|
| Aluthnuwara, Mawanella | None |
| Ambadeniya, Mawanella | None |
| Ambalawa, Mawanella | None |
| Ambaruppa/ Madulbowa West, Mawanella | None |
| Ambulugala, Mawanella | 71503 |
| Attanagoda, Mawanella | None |
| Balathgamuwa, Mawanella | None |
| Balawathgama, Mawanella | None |
| Batawala, Mawanella | None |
| Beligammana, Mawanella | None |
| Daswatta, Mawanella | None |
| Dehimaduwa, Mawanella | None |
| Dodanthale, Mawanella | None |
| Dumbuluwawa, Mawanella | None |
| Dunugama Maliyadda, Mawanella | None |
| Edaduwawa, Mawanella | None |
| Embilmeewala, Mawanella | None |
| Eraminigammana, Mawanella | None |
| Ganethenna, Mawanella | None |
| Ginihappitiya East, Mawanella | None |
| Ginihappitiya West, Mawanella | None |
| Gondiwala, Mawanella | None |
| Habbunkaduwa, Mawanella | None |
| Heenatipana, Mawanella | None |
| Hemmathagama, Mawanella | None |
| Hingula, Mawanella | 71520 |