| 00000 | Colombo | Western Province, Sri Lanka | 648,034 |
| 00094 | — | — | — |
| 00100 | Fort (Colombo) | Western Province, Sri Lanka | — |
| 00200 | Slave Island | Western Province, Sri Lanka | — |
| 00300 | Kollupitiya | Western Province, Sri Lanka | — |
| 00400 | Bambalapitiya | Western Province, Sri Lanka | — |
| 00500 | Havelock Town | Western Province, Sri Lanka | — |
| 00600 | Wellawatte | Western Province, Sri Lanka | — |
| 00700 | Colombo | Western Province, Sri Lanka | 648,034 |
| 00800 | Borella | Western Province, Sri Lanka | — |
| 00900 | Colombo | Western Province, Sri Lanka | 648,034 |
| 01000 | Colombo | Western Province, Sri Lanka | 648,034 |
| 01100 | Colombo | Western Province, Sri Lanka | 648,034 |
| 01200 | Colombo | Western Province, Sri Lanka | 648,034 |
| 01300 | Kotahena | Western Province, Sri Lanka | — |
| 01400 | Colombo | Western Province, Sri Lanka | 648,034 |
| 01500 | Mutwal | Western Province, Sri Lanka | — |
| 10100 | Sri Jayawardenepura Kotte | Western Province, Sri Lanka | 115,826 |
| 10107 | Sri Jayawardenepura Kotte | Western Province, Sri Lanka | 115,826 |
| 10115 | Malabe | Western Province, Sri Lanka | — |
| 10116 | Thalawathugoda | Western Province, Sri Lanka | — |
| 10118 | Hokandara | Western Province, Sri Lanka | — |
| 10120 | Battaramulla | Western Province, Sri Lanka | 75,633 |
| 10150 | — | — | — |
| 10200 | Homagama | Western Province, Sri Lanka | 34,664 |
| 10202 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10204 | — | — | — |
| 10206 | Homagama | Western Province, Sri Lanka | 34,664 |
| 10208 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10230 | Pannipitiya | Western Province, Sri Lanka | — |
| 10232 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10250 | Nugegoda | Western Province, Sri Lanka | — |
| 10280 | Maharagama | Western Province, Sri Lanka | 66,576 |
| 10290 | Boralesgamuwa | Western Province, Sri Lanka | — |
| 10300 | Piliyandala | Western Province, Sri Lanka | — |
| 10302 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10304 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10306 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10320 | — | — | — |
| 10350 | Dehiwala | Western Province, Sri Lanka | — |
| 10370 | Mount Lavinia | Western Province, Sri Lanka | 219,827 |
| 10390 | — | — | — |
| 10400 | Moratuwa | Western Province, Sri Lanka | 185,031 |
| 10500 | — | — | — |
| 10502 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10504 | — | — | — |
| 10508 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10511 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10513 | Colombo | Western Province, Sri Lanka | 648,034 |
| 10522 | Colombo | Western Province, Sri Lanka | 648,034 |
