Damminna Postal Code
| City | Postal Code | District |
|---|---|---|
| Maduruoya | 51108 | Polonnaruwa |
| Ruhunugama | 51112 | Polonnaruwa |
| Siripura | 51155 | Polonnaruwa |
| Kekuluwela | 51168 | Polonnaruwa |
| Diyabeduma | 51225 | Polonnaruwa |
| Attanakadawala | 51235 | Polonnaruwa |
| Kottapitiya | 51244 | Polonnaruwa |
| Jayasiripura | 51246 | Polonnaruwa |
| Bakamuna | 51250 | Polonnaruwa |
| Orubendisiyambalawa | 51256 | Polonnaruwa |
| Elahera | 51258 | Polonnaruwa |
| Galoya Junction | 51375 | Polonnaruwa |
| Singhagama | 51378 | Polonnaruwa |
| Hingurakgoda | 51400 | Polonnaruwa |
| Hingurakdamana | 51408 | Polonnaruwa |