There are 6 post offices under PIN code 623401.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Anandur S.O | Sub Office | Delivery | Tiruvadanai | Ramanathapuram | Ramanathapuram | Madurai | Tamil Nadu | Tamilnadu |
| 2 | Ayinkudi B.O | Branch Office | Delivery | Tiruvadanai | Ramanathapuram | Ramanathapuram | Madurai | Tamil Nadu | Tamilnadu |
| 3 | Govindamangalam B.O | Branch Office | Delivery | Tiruvadanai | Ramanathapuram | Ramanathapuram | Madurai | Tamil Nadu | Tamilnadu |
| 4 | Kalladithidal B.O | Branch Office | Delivery | Tiruvadanai | Sivaganga | Ramanathapuram | Madurai | Tamil Nadu | Tamilnadu |
| 5 | Radhanur B.O | Branch Office | Delivery | Tiruvadanai | Ramanathapuram | Ramanathapuram | Madurai | Tamil Nadu | Tamilnadu |
| 6 | Valanai B.O | Branch Office | Delivery | Tiruvadanai | Ramanathapuram | Ramanathapuram | Madurai | Tamil Nadu | Tamilnadu |