| Place | Post Code |
|---|---|
| Achanur, Thiruvaiyaru | 613203 |
| Adanjur, Thiruvaiyaru | 613104 |
| Agarapettai, Thiruvaiyaru | 613104 |
| Aimbadumelnagaram, Thiruvaiyaru | 613101 |
| Allur, Thiruvaiyaru | 613101 |
| Ambathumelagaram, Thiruvaiyaru | 613101 |
| Ambedkarpuram, Thiruvaiyaru | 613104 |
| Ammankudi, Thiruvaiyaru | 613602 |
| Ammayagaram, Thiruvaiyaru | 613101 |
| Anbunagar, Thiruvaiyaru | 613101 |
| Angurar Thoppu, Thiruvaiyaru | 613105 |
| Arasagudi, Thiruvaiyaru | 613101 |
| Arcadu, Thiruvaiyaru | 613205 |
| Arcodu, Thiruvaiyaru | 613203 |
| Arkadu, Thiruvaiyaru | 609807 |
| Arputhamathakoil, Thiruvaiyaru | 613103 |
| Avikkarai, Thiruvaiyaru | 613202 |
| Brahadeeswarankoil Thottam, Thiruvaiyaru | 613202 |
| Budarayanallur, Thiruvaiyaru | 613602 |
| Chettipattu, Thiruvaiyaru | 613202 |
| Chettithoppu, Thiruvaiyaru | 613104 |
| Deekshasamudram, Thiruvaiyaru | 613602 |
| Eduthunanthuruthi, Thiruvaiyaru | 613104 |
| Elangattu Padugai, Thiruvaiyaru | 613105 |
| Elangattu Padukai, Thiruvaiyaru | 613104 |
| Eswarankoilpathu, Thiruvaiyaru | 613602, 613101 |