Gonagantenna Postal Code
| City | Postal Code | District |
|---|---|---|
| Adhikarigama | 20713 | Kandy |
| Marymount Colony | 20714 | Kandy |
| Unantenna | 20719 | Kandy |
| Udawatta | 20722 | Kandy |
| Illagolla | 20724 | Kandy |
| Rikillagaskada | 20730 | Kandy |
| Ekiriya | 20732 | Kandy |
| Pallebowala | 20734 | Kandy |
| Gannewa Udagama | 20735 | Kandy |
| Karandagolla | 20738 | Kandy |
| Dehipe | 20739 | Kandy |
| Katugastota | 20800 | Kandy |
| Udatalavinna | 20802 | Kandy |
| Wattegama | 20810 | Kandy |
| Doragamuwa | 20816 | Kandy |