Dewalapola Postal Code
| City | Postal Code | District |
|---|---|---|
| Watinapaha | 11104 | Gampaha |
| Kumbaloluwa | 11105 | Gampaha |
| Essella | 11108 | Gampaha |
| Muddaragama | 11112 | Gampaha |
| Mabodale | 11114 | Gampaha |
| Ellakkala | 11116 | Gampaha |
| Attanagalla | 11120 | Gampaha |
| Alawala | 11122 | Gampaha |
| Urapola | 11126 | Gampaha |
| Nikahetikanda | 11128 | Gampaha |
| Rukmale | 11129 | Gampaha |
| Bopagama | 11134 | Gampaha |
| Rukgahavila | 11142 | Gampaha |
| Kahatowita | 11144 | Gampaha |
| Walgammulla | 11146 | Gampaha |