| Place | Post Code |
|---|---|
| Muthunaal, Ramanathapuram | 623504 |
| Muthuregunathapuram, Ramanathapuram | 623531 |
| Muthuvarkondan, Ramanathapuram | 623531 |
| Muttanvalasai, Ramanathapuram | 623534 |
| Nadar Kudiyeruppu, Ramanathapuram | 623532 |
| Nadumanaikadu, Ramanathapuram | 623519 |
| Naduvalasai, Ramanathapuram | 623534 |
| Nagachi, Ramanathapuram | 623534 |
| Nagendrachery, Ramanathapuram | 623513 |
| Naidu Street, Ramanathapuram | 623504 |
| Nalirukkai, Ramanathapuram | 623533 |
| Nallangudi, Ramanathapuram | 623533 |
| Nallathambivalasai, Ramanathapuram | 623522 |
| Nallirukkai, Ramanathapuram | 623533 |
| Nambianvalasai, Ramanathapuram | 623534 |
| Nambiyanvalasai, Ramanathapuram | 623532 |
| Naraiyoorani, Ramanathapuram | 623534 |
| Naranamangalam, Ramanathapuram | 623537 |