There are 10 post offices under PIN code 621005.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Alagiamanavalam B.O | Branch Office | Delivery | Manachanallur | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | C.Ayyampalayam B.O | Branch Office | Delivery | Manachanallur | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Kalpalayam B.O | Branch Office | Delivery | Manachanallur | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Kariyamanickam B.O | Branch Office | Delivery | Manachanallur | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Kovathakudi B.O | Branch Office | Delivery | Manachanalloor | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Manachanalloor S.O | Sub Office | Delivery | Manachanalloor | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Rajampalayam B.O | Branch Office | Delivery | Manachanalloor | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Tattamangalam B.O | Branch Office | Delivery | Manachanalloor | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 9 | Tirupanjili B.O | Branch Office | Delivery | Manachanalloor | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |
| 10 | Valaiyur B.O | Branch Office | Delivery | Manachanalloor | Tiruchirappalli | Srirangam | Tiruchy | Tamil Nadu | Tamilnadu |