There are 5 post offices under PIN code 621101.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ammapalayam S.O | Sub Office | Delivery | Perambalur | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Kalarampatti B.O | Branch Office | Delivery | Perambalur | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Ladapuram B.O | Branch Office | Delivery | Perambalur | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Melapuliyur B.O | Branch Office | Delivery | Perambalur | Perambalur | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Puduattur B.O | Branch Office | Delivery | Thuraiyur | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |