There are 4 post offices under PIN code 621730.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Cement Nagar Dalavoy S.O | Sub Office | Delivery | Na | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Dalavoy B.O | Branch Office | Delivery | Na | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Sannasinallur B.O | Branch Office | Delivery | Sendurai | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Siluppanur B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |