Udappuwa Postal Code
| City | Postal Code | District |
|---|---|---|
| Wijayakatupotha | 61006 | Puttalam |
| Wilpotha | 61008 | Puttalam |
| Adippala | 61012 | Puttalam |
| Mugunuwatawana | 61014 | Puttalam |
| Ilippadeniya | 61018 | Puttalam |
| Karawitagara | 61022 | Puttalam |
| Ambakandawila | 61024 | Puttalam |
| Kumarakattuwa | 61032 | Puttalam |
| Pallama | 61040 | Puttalam |
| Serukele | 61042 | Puttalam |
| Waikkala | 61110 | Puttalam |
| Nainamadama | 61120 | Puttalam |
| Dankotuwa | 61130 | Puttalam |
| Haldanduwana | 61135 | Puttalam |
| Bujjampola | 61136 | Puttalam |