| Ort | Postleitzahl |
|---|---|
| Adikkandiya, Katana | None |
| Air Force Camp, Katana | None |
| Akkara 50, Katana | None |
| Alawathupitiya, Katana | None |
| Amandoluwa, Katana | None |
| Ambalammulla, Katana | None |
| Andiambalama East, Katana | 11558 |
| Andiambalama West, Katana | 11558 |
| Bambukuliya, Katana | None |
| Bandarawatta East, Katana | None |
| Bandarawatta West, Katana | None |
| Dambaduraya, Katana | None |
| Dewamottawa, Katana | None |
| Ethgala, Katana | None |
| Ethgala South, Katana | None |
| Evariwatta, Katana | None |
| Ganepola, Katana | None |
| Heenatiyana East, Katana | None |
| Heenatiyana South, Katana | None |
| Heenatiyana West, Katana | None |
| Ihala Kandawala, Katana | None |
| K.C. De Silva Pura, Katana | None |
| Kadirana, Katana | None |
| Kadirana North, Katana | None |
| Kadirana South, Katana | None |
| Kalahapitiya, Katana | None |