List the names of all the 32 districts in Tamil Nadu?

There are a total of 32 districts in Tamil Nadu. They are:

1. Chennai
2. Coimbatore
3. Cuddalore
4. Dharmapuri
5. Dindigul
6. Erode
7. Kanchipuram
8. Kanyakumari
9. Karur
10. Krishnagiri
11. Madurai
12. Nagapattinam
13. Namakkal
14. Perambalur
15. Pudukottai
16. Ramanathapuram
17. Salem
18. Sivagangai
19. Thanjavur
20. Theni
21. Nilgiris
22. Thoothukudi
23. Trichy
24. Thirunelveli
25. Thiruvallur
26. Thiruvannamalai
27. Vellore
28. Villupuram
29. Virudhunagar
30. Ariyalur
31. Thirupur
32. Thiruvarur

The largest and most important cities are bolded out...