There are 8 post offices under PIN code 609403.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | A. Kiliyanur B.O | Branch Office | Delivery | Mayiladuthurai | Nagapattinam | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Kaliyakudi B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Keeranur B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Kollumangudi S.O | Sub Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Nedungulam B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Pavattakudi B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Pillur B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Sirupuliyur B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |