Kahawala Postal Code
| City | Postal Code | District |
|---|---|---|
| Watareka | 10511 | Colombo |
| Batawala | 10513 | Colombo |
| Bope | 10522 | Colombo |
| Handapangoda | 10524 | Colombo |
| Batugampola | 10526 | Colombo |
| Kolonnawa | 10600 | Colombo |
| Angoda | 10620 | Colombo |
| Mulleriyawa | 10620 | Colombo |
| Kaduwela | 10640 | Colombo |
| Hanwella | 10650 | Colombo |
| Ranala | 10654 | Colombo |
| Dedigamuwa | 10656 | Colombo |
| Pugoda | 10660 | Gampaha |
| Kapugoda | 10662 | Gampaha |
| Tittapattara | 10664 | Gampaha |