DISTRICT COLOMBO DISTRIC CODE CO
| CITY | POSTAL CODE |
| Colombo 01 | 00100 |
| Colombo 02 | 00200 |
| Colombo 03 | 00300 |
| Colombo 04 | 00400 |
| Colombo 05 | 00500 |
| Colombo 06 | 00600 |
| Colombo 07 | 00700 |
| Colombo 08 | 00800 |
| Colombo 09 | 00900 |
| Colombo 10 | 01000 |
| Colombo 11 | 01100 |
| Colombo 12 | 01200 |
| Colombo 13 | 01300 |
| Colombo 14 | 01400 |
| Colombo 15 | 01500 |
| Akarawita | 10732 |
| Athurugiriya | 10150 |
| Avissawella | 10700 |
| Batawala | 10513 |
| Battaramulla | 10120 |
| Batugampola | 10526 |
| Bope | 10522 |
| Boralesgamuwa | 10290 |
| Dedigamuwa | 10656 |
| Dehiwala | 10350 |
| Deltara | 10302 |
| Habarakada | 10204 |
| Handapangoda | 10524 |
| Hanwella | 10650 |
| Hewainna | 10714 |
| Hiripitya | 10232 |
| Hokandara | 10118 |
| Homagama | 10200 |
| Horagala | 10502 |
| Kaduwela | 10640 |
| Kahawala | 10508 |
| Kalatuwawa | 10718 |
| Kiriwattuduwa | 10208 |
| Kolonnawa | 10600 |
| Kosgama | 10730 |
| Madapatha | 10306 |
| Maharagama | 10280 |
| Malabe | 10115 |
| Meegoda | 10504 |
| Moratuwa | 10400 |
| Mount Lavinia | 10370 |
| Mullegama | 10202 |
| Mulleriyawa New Town | 10620 |
| Mutwal | 01500 |
| Napawela | 10704 |
| Nugegoda | 10250 |
| Padukka | 10500 |
| Pannipitiya | 10230 |
| Piliyandala | 10300 |
| Pitipana Homagama | 10206 |
| Polgasowita | 10320 |
| Puwakpitiya | 10712 |
| Ranala | 10654 |
| Siddamulla | 10304 |
| Sri Jayawardenapura | 10100 |
| Talawatugoda | 10116 |
| Tummodara | 10682 |
| Waga | 10680 |
| Watareka | 10511 |
