List of Districts in Tamil Nadu 2021

# District Population (2011) Area (km²)
1 Ariyalur 7,52,481 3,208
2 Chengalpattu 25,56,244 2,945
3 Chennai 71,00,000 426
4 Coimbatore 34,72,578 7,469
5 Cuddalore 26,00,880 3,999
6 Dharmapuri 15,02,900 4,532
7 Dindigul 21,61,367 6,058
8 Erode 22,59,608 5,714
9 Kallakurichi 13,70,281 3,520
10 Kanchipuram 11,66,401 1,656
11 Kanyakumari 18,63,178 1,685
12 Karur 10,76,588 2,901
13 Krishnagiri 18,83,731 5,086
14 Madurai 39,91,038 3,676
15 Mayiladuthurai 9,18,356 1,172
16 Nagapattinam 16,14,069 2,716
17 Nilgiris 7,35,071 2,549
18 Namakkal 17,21,179 3,429
19 Perambalur 5,64,511 1,752
20 Pudukkottai 19,18,725 4,651
21 Ramanathapuram 13,37,560 4,123
22 Ranipet 12,10,277 2,234
23 Salem 34,80,008 5,245
24 Sivaganga 13,41,250 4,086
25 Tenkasi 14,07,627 2916
26 Tirupur 24,71,222 5,106
27 Tiruchirappalli 27,13,858 4,407
28 Theni 12,43,684 3,066
29 Tirunelveli 16,65,253 3,842
30 Thanjavur 24,02,781 3,397
31 Thoothukudi 17,38,376 4,594
32 Tirupattur 11,11,812 1,792
33 Tiruvallur 37,25,697 3,424
34 Tiruvarur 12,68,094 2,377
35 Tiruvannamalai 24,68,965 6,191
36 Vellore 16,14,242 2,080
37 Viluppuram 20,93,003 3,725
38 Virudhunagar 19,43,309 3,446