There are 5 post offices under PIN code 612104.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Andalampettai B.O | Branch Office | Delivery | Thiruvidaimarudur | Thanjavur | Kumbakonam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Mahadana Street B.O | Branch Office | Non-Delivery | Thiruvidaimarudur | Thanjavur | Kumbakonam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Tiruvidaimarudur R.S. B.O | Branch Office | Non-Delivery | Thiruvidaimarudur | Thanjavur | Kumbakonam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Tiruvidaimarudur West B.O | Branch Office | Non-Delivery | Thiruvidaimarudur | Thanjavur | Kumbakonam | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Tiruvidamarudur S.O | Sub Office | Delivery | Tiruvidamarudur | Thanjavur | Kumbakonam | Tiruchy | Tamil Nadu | Tamilnadu |