There are 4 post offices under PIN code 621203.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Arasalur B.O | Branch Office | Delivery | Musiri | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Balasamudram S.O (Tiruchirappalli) | Sub Office | Delivery | Thottiyam | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | M.Puthur B.O | Branch Office | Delivery | Musiri | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Thirunarayanapuram B.O | Branch Office | Delivery | Musiri | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |