| Place | Post Code |
|---|---|
| Dehiwala East, Dehiwala | 10350 |
| Dehiwala West, Dehiwala | 10350 |
| Dutugemunu, Dehiwala | None |
| Galwala, Dehiwala | None |
| Hathbodhiya, Dehiwala | None |
| Jayathilaka, Dehiwala | None |
| Kalubovila, Dehiwala | None |
| Karagampitiya, Dehiwala | None |
| Kawdana East, Dehiwala | None |
| Kohuwala, Dehiwala | None |
| Malwatta, Dehiwala | None |
| Nedimala, Dehiwala | None |
| Sri Saranankara, Dehiwala | None |
| Udyanaya, Dehiwala | None |
| Vilawala, Dehiwala | None |