There are 8 post offices under PIN code 606103.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Dharmanallur B.O | Branch Office | Delivery | Vriddhachalam | Cuddalore | Vriddhachalam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Gopalapuram B.O | Branch Office | Delivery | Virudhachalam | Cuddalore | Vriddhachalam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Kammapuram S.O | Sub Office | Delivery | Vriddhachalam | Cuddalore | Vriddhachalam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Kathazhai B.O | Branch Office | Delivery | Vriddhachalam | Cuddalore | Vriddhachalam | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Kilapalaiyur B.O | Branch Office | Delivery | Vriddhachalam | Cuddalore | Vriddhachalam | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Ottimedu B.O | Branch Office | Delivery | Vriddhachalam | Cuddalore | Vriddhachalam | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Periyakottumulai B.O | Branch Office | Delivery | Vriddhachalam | Cuddalore | Vriddhachalam | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Sathapadi B.O | Branch Office | Delivery | Vriddhachalam | Cuddalore | Vriddhachalam | Tiruchy | Tamil Nadu | Tamilnadu |