There are 13 post offices under PIN code 621713.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Allinagaram B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Ameenabad B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Annanagar B.O | Branch Office | Non-Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Govindapuram B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Gudalur B.O | Branch Office | Delivery | Ariyalur | Perambalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Iluppaikudi B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Kilamathur B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Koothur B.O | Branch Office | Delivery | Ariyalur | Perambalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 9 | Manakkal (Ariyalur) B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 10 | Nochikulam B.O | Branch Office | Delivery | Ariyalur | Perambalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 11 | Peraiyur B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 12 | Pilimisai B.O | Branch Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |
| 13 | Rajajinagar S.O (Ariyalur) | Sub Office | Delivery | Ariyalur | Ariyalur | Tiruchirapalli | Tiruchy | Tamil Nadu | Tamilnadu |