There are 8 post offices under PIN code 609503.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Agarathirumalam B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Ambal B.O | Branch Office | Delivery | Nannilam | Nagapattinam | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Koothanur B.O | Branch Office | Non-Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Manandakudi B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Maruduvancheri B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Punthottam S.O | Sub Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Sarabojirajapuram B.O | Branch Office | Delivery | Kodavasal | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Sembiyanallur B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |