Koholana Postal Code
| City | Postal Code | District |
|---|---|---|
| Bolossagama | 12008 | Kalutara |
| Remunagoda | 12009 | Kalutara |
| Gamagoda | 12016 | Kalutara |
| Dodangoda | 12020 | Kalutara |
| Bombuwala | 12024 | Kalutara |
| Tebuwana | 12025 | Kalutara |
| Neboda | 12030 | Kalutara |
| Paiyagala | 12050 | Kalutara |
| Halkandawila | 12055 | Kalutara |
| Maggona | 12060 | Kalutara |
| Beruwala | 12070 | Kalutara |
| Padagoda | 12074 | Kalutara |
| Kalawila Kiranthidiya | 12078 | Kalutara |
| Aluthgama | 12080 | Kalutara |
| Dharga Town | 12090 | Kalutara |