There are 12 post offices under PIN code 621708.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Adhanur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Asoor B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Ilandaikuli B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Kunnam S.O (Perambalur) | Sub Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Kurumbapalayam B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Maruvathur-ariyalur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Melamathur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Moongilpadi B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 9 | Odhiyam B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 10 | Perali B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 11 | Sithali B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 12 | Varagur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |