Gandhinagar S.O is the primary post office registered under PIN code 625516 in Theni, Tamil Nadu. This code sits within the Southern Postal Region, with 5 offices operating under it.
| Post office | Type | Full name |
|---|---|---|
| Gandhinagar S.O | SO | Sub Post Office |
| Karunagamuthanpatti B.O | BO | Branch Post Office |
| Kullappagoundanpatti B.O | BO | Branch Post Office |
| Surulipatti B.O | BO | Branch Post Office |
| Cumbum S.O (Theni) | OTHER | post office |