| Place | Post Code |
|---|---|
| Pelpola, Hanwella | None |
| Puwakpitiya, Hanwella | None |
| Puwakpitiya South, Hanwella | None |
| Salawa, Hanwella | None |
| Seethagama, Hanwella | None |
| Seethawaka, Hanwella | None |
| Suduwella, Hanwella | None |
| Thawalgoda, Hanwella | None |
| Thunnana East, Hanwella | None |
| Thunnana West, Hanwella | None |
| Ukwatta, Hanwella | None |
| Walawwatta, Hanwella | None |
| Welikanna, Hanwella | None |
| Weragolla North, Hanwella | None |
| Weragolla South, Hanwella | None |
| Weralupitiya, Hanwella | None |