Thannamunai Postal Code
| City | Postal Code | District |
|---|---|---|
| Kattankudi | 30100 | Batticaloa |
| Arayampathy | 30150 | Batticaloa |
| Puthukudiyiruppu | 30158 | Batticaloa |
| Kirankulam | 30159 | Batticaloa |
| Kokkaddichcholai | 30160 | Batticaloa |
| Ampilanthurai | 30162 | Batticaloa |
| Kurukkalmadam | 30192 | Batticaloa |
| Cheddipalayam | 30194 | Batticaloa |
| Thettativu | 30196 | Batticaloa |
| Kaluthavalai | 30197 | Batticaloa |
| Kaluwanchikudi | 30200 | Batticaloa |
| Vellavely | 30204 | Batticaloa |
| Bakiella | 30206 | Batticaloa |
| Mandur | 30220 | Batticaloa |
| Periyaporativu | 30230 | Batticaloa |