| District Code | District Name |
| 1 | Kanchipuram |
| 2 | Tiruvallur |
| 3 | Cuddalore |
| 4 | Villupuram |
| 5 | Vellore |
| 6 | Tiruvannamalai |
| 7 | Salem |
| 8 | Namakkal |
| 9 | Dharmapuri |
| 10 | Erode |
| 11 | Coimbatore |
| 12 | The Nilgiris |
| 13 | Thanjavur |
| 14 | Nagapattinam |
| 15 | Tiruvarur |
| 16 | Tiruchirappalli |
| 17 | Karur |
| 18 | Perambalur |
| 19 | Pudukkottai |
| 20 | Madurai |
| 21 | Theni |
| 22 | Dindigul |
| 23 | Ramanathapuram |
| 24 | Virudhunagar |
| 25 | Sivagangai |
| 26 | Tirunelveli |
| 27 | Thoothukkudi |
| 28 | Kanniyakumari |
| 30 | Krishnagiri |
| 31 | Ariyalur |
| 32 | Tiruppur |
