There are 8 post offices under PIN code 621108.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Agaramsigur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Athiyur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Labbaikudikadu S.O | Sub Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Ogalur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Pennakonam B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | S.Aduthurai B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Thirumanthurai B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Vadakkalur B.O | Branch Office | Delivery | Kunnam | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |