| SNo. | Name of Post Office | Pin Code | Type of Office |
|---|---|---|---|
| 1. | Akkaraivattam | 609 604 | Branch Office |
| 2. | Ambagrathur | 609 601 | Sub-Office |
| 3. | Dharmapuram | 609 602 | Branch Office |
| 4. | Karaikal Bazaar | 609 602 | Sub-Office |
| 5. | Karaikal Main | 609 602 | Main Sub-Office |
| 6. | Karaikal South | 609 602 | Sub-Office |
| 7. | Karaikalmedu | 609 605 | Branch Office |
| 8. | Karaikoilpathu | 609 605 | Branch Office |
| 9. | Karukkangudi | 609 607 | Branch Office |
| 10. | Kottucherry | 609 609 | Sub-Office |
| 11. | Kurumbagaram | 609 603 | Branch Office |
| 12. | Madagadi | 609 602 | Branch Office |
| 13. | Melakasakudi | 609 603 | Branch Office |
| 14. | Nallambal | 609 601 | Branch Office |
| 15. | Nallathur | 609 603 | Branch Office |
| 16. | Nedungadu | 609 603 | Sub-Office |
| 17. | Neravy | 609 604 | Sub-Office |
| 18. | Sethur | 609 601 | Sub-Office |
| 19. | Sellur | 609 607 | Branch Office |
| 20. | Sorakkudi | 609 607 | Branch Office |
| 21. | T.R.Pattinam South | 609 606 | Branch Office |
| 22. | Thalatheru | 609 605 | Sub-Office |
| 23. | T.R.Pattinam | 609 606 | Sub-Office |
| 24. | Thirunallar | 609 607 | Sub-Office |
| 25. | Thiruvettakudy | 609 609 | Branch Office |
| 26. | Varichikudy | 609 609 | Branch-Office |
| 27. | Vizhithiyur | 609 607 | Branch Office |
