There are 8 post offices under PIN code 621717.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Andikurumbalur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Kilumathur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Nannai B.O | Branch Office | Delivery | Perambalur | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Olaipadi B.O | Branch Office | Delivery | Perambalur | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Paravai B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Perumathur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Vaithiyanathapuram B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Veppur S.O | Sub Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |