Radhanur BO is the primary post office registered under PIN code 623401 in Ramanathapuram, Tamil Nadu. This code sits within the Southern Postal Region, with 6 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Radhanur BO | BO | Branch Post Office |
| Valanai BO | BO | Branch Post Office |
| Ayinkudi BO | BO | Branch Post Office |
| Anandur SO | SO | Sub Post Office |
| Govindamangalam BO | BO | Branch Post Office |
| Kalladithidal BO | BO | Branch Post Office |
