| Sr. No. | District Name | State Name | Total Post Offices |
|---|---|---|---|
| 21. | Thanjavur | TAMIL NADU | 515 |
| 22. | Theni | TAMIL NADU | 163 |
| 23. | Tiruchirappalli | TAMIL NADU | 485 |
| 24. | Tirunelveli | TAMIL NADU | 555 |
| 25. | Tiruvallur | TAMIL NADU | 379 |
| 26. | Tiruvannamalai | TAMIL NADU | 486 |
| 27. | Tiruvarur | TAMIL NADU | 348 |
| 28. | Tuticorin | TAMIL NADU | 426 |
| 29. | Vellore | TAMIL NADU | 678 |
| 30. | Villupuram | TAMIL NADU | 651 |
