| Gampaha Aluthgama East, Gampaha |
11000 |
| Gampaha Aluthgama North, Gampaha |
11000 |
| Gampaha Aluthgama West, Gampaha |
11000 |
| Ganemulla North, Gampaha |
11020 |
| Ganemulla South, Gampaha |
11020 |
| Godagedara, Gampaha |
None |
| Gonagaha1, Gampaha |
None |
| Gonagaha2, Gampaha |
None |
| Henarathgoda, Gampaha |
None |
| Horagolla North, Gampaha |
None |
| Horagolla South, Gampaha |
None |
| Ihala Imbulgoda North, Gampaha |
None |
| Ihala Imbulgoda South, Gampaha |
None |
| Ihala Yagoda North, Gampaha |
None |
| Ihala Yagoda South, Gampaha |
None |
| Ihalagama East, Gampaha |
None |
| Ihalagama West, Gampaha |
None |
| Indigolla, Gampaha |
None |
| Karanayakamulla, Gampaha |
None |
| Katuwalamulla North, Gampaha |
None |
| Katuwalamulla South, Gampaha |
None |
| Keselwathugoda North, Gampaha |
None |
| Keselwathugoda South, Gampaha |
None |
| Kidagammulla, Gampaha |
None |
| Kirindivita, Gampaha |
None |
| Kosovita, Gampaha |
None |