Dunagaha Postal Code
| City | Postal Code | District |
|---|---|---|
| Ihala Madampella | 11265 | Gampaha |
| Demanhandiya | 11270 | Gampaha |
| Wattala | 11300 | Gampaha |
| Wattala Market Junction | 11301 | Gampaha |
| Mabola | 11305 | Gampaha |
| Hendala | 11307 | Gampaha |
| Hunupitiya | 11311 | Gampaha |
| Gongitota | 11315 | Gampaha |
| Kandana | 11320 | Gampaha |
| Polpithimukulana | 11324 | Gampaha |
| Uswetakeiyawa | 11328 | Gampaha |
| Ja-Ela | 11350 | Gampaha |
| Nivandama | 11354 | Gampaha |
| Makewita | 11358 | Gampaha |
| Pamunugama | 11370 | Gampaha |