There are 10 post offices under PIN code 610105.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Achuthamangalam B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 2 | Adambar B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 3 | Anaikuppam B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 4 | Mappilaikuppam B.O | Branch Office | Non-Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 5 | Nannilam Cutchery S.O | Sub Office | Non-Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 6 | Nannilam S.O | Sub Office | Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 7 | Nemmeli B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 8 | Salipperi B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 9 | Vadagudi B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |
| 10 | Valkkai B.O | Branch Office | Delivery | Nannilam | Tiruvarur | Nagapattinam | Tiruchy | Tamil Nadu | Tamilnadu |