Kotadeniyawa Postal Code
| City | Postal Code | District |
|---|---|---|
| Mellawagedara | 11234 | Gampaha |
| Kitulwala | 11242 | Gampaha |
| Banduragoda | 11244 | Gampaha |
| Divulapitiya | 11250 | Gampaha |
| Marandagahamula | 11260 | Gampaha |
| Hunumulla | 11262 | Gampaha |
| Dunagaha | 11264 | Gampaha |
| 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 |