Kahangama Postal Code
| City | Postal Code | District |
|---|---|---|
| Dodampe | 70017 | Ratnapura |
| Karangoda | 70018 | Ratnapura |
| Dambuluwana | 70019 | Ratnapura |
| Medagalatura | 70021 | Ratnapura |
| Ayagama | 70024 | Ratnapura |
| Gawaragiriya | 70026 | Ratnapura |
| Elapatha | 70032 | Ratnapura |
| Udaniriella | 70034 | Ratnapura |
| RatnaHangamuwa | 70036 | Ratnapura |
| Diganakanda | 70037 | Ratnapura |
| Niralgama | 70038 | Ratnapura |
| Ihalahakamuwa | 70039 | Ratnapura |
| Marapana | 70041 | Ratnapura |
| Dela | 70042 | Ratnapura |
| Udakarawita | 70044 | Ratnapura |