There are 6 post offices under PIN code 609003.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Chittarkadu B.O | Branch Office | Non-Delivery | Mayiladuthurai | Nagapattinam | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Koranad South B.O | Branch Office | Non-Delivery | Mayiladuthurai | Nagapattinam | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Mappadugai B.O | Branch Office | Delivery | Mayiladuthurai | Nagapattinam | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Mayiladuthurai R.S S.O | Sub Office | Delivery | Mayiladuthurai | Nagapattinam | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Mayiladuthurai West B.O | Branch Office | Non-Delivery | Mayiladuthurai | Nagapattinam | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Sholampettai B.O | Branch Office | Delivery | Mayiladuthurai | Nagapattinam | Mayiladuthurai | Tiruchy | Tamil Nadu | Tamilnadu |