Tamil Nadu (TN)
See also: Districts of Tamil Nadu| Code | District | Headquarters | Population (2001) | Area (km²) | Density (/km²) | Official website |
| AY | Ariyalur | Ariyalur | 698,000 | 3,208 | 322 | http://municipality.tn.gov.in/Ariyalur/ |
| CH | Chennai | Chennai (Madras) | 4,216,268 | 174 | 24,231 | http://www.chennai.tn.nic.in/ |
| CO | Coimbatore | Coimbatore | 4,224,107 | 7,469 | 566 | http://www.coimbatore.tn.nic.in/ |
| CU | Cuddalore | Cuddalore | 2,280,530 | 3,999 | 570 | http://www.cuddalore.tn.nic.in/ |
| DH | Dharmapuri | Dharmapuri | 2,833,252 | 4,497 | 294 | http://www.dharmapuri.tn.nic.in/ |
| DI | Dindigul | Dindigul | 1,918,960 | 6,058 | 317 | http://www.dindigul.tn.nic.in/ |
| ER | Erode | Erode | 2,574,067 | 5,714 | 314 | http://erode.nic.in/ |
| KC | Kanchipuram | Kanchipuram | 2,869,920 | 4,433 | 647 | http://www.kanchi.tn.nic.in/ |
| KK | Kanyakumari | Nagercoil | 1,669,763 | 1,685 | 991 | http://www.kanyakumari.tn.nic.in/ |
| KR | Karur | Karur | 933,791 | 2,896 | 322 | http://karur.nic.in/ |
| MA | Madurai | Madurai | 2,562,279 | 3,676 | 697 | http://www.madurai.tn.nic.in/ |
| NG | Nagapattinam | Nagapattinam | 1,487,055 | 2,716 | 548 | http://www.nagapattinam.tn.nic.in/ |
| NI | Nilgiris | Udagamandalam (Ootacamund/Ooty) | 764,826 | 2,549 | 300 | http://nilgiris.nic.in/ |
| NM | Namakkal | Namakkal | 1,495,661 | 3,429 | 436 | http://namakkal.nic.in/ |
| PE | Perambalur | Perambalur | 486,971 | 1,752 | 278 | http://www.perambalur.tn.nic.in/ |
| PU | Pudukkottai | Pudukkottai | 1,452,269 | 4,651 | 312 | http://pudukkottai.nic.in/ |
| RA | Ramanathapuram | Ramanathapuram | 1,183,321 | 4,123 | 287 | http://ramanathapuram.nic.in/ |
| SA | Salem | Salem | 2,992,754 | 5,220 | 573 | http://salem.nic.in/ |
| SI | Sivaganga | Sivaganga | 1,150,753 | 4,086 | 282 | http://sivaganga.nic.in/ |
| TP | Tirupur | Tirupur | 19,17,033 | 5,106 | 375 | http://tiruppurcorp.tn.gov.in/ |
| TC | Tiruchirappalli | Tiruchirappalli | 2,388,831 | 4,407 | 542 | http://tiruchirappalli.nic.in/ |
| TH | Theni | Theni | 1,094,724 | 3,066 | 357 | http://www.theni.tn.nic.in/ |
| TI | Tirunelveli | Tirunelveli | 2,801,194 | 6,810 | 411 | http://www.nellai.tn.nic.in/ |
| TJ | Thanjavur | Thanjavur | 2,205,375 | 3,397 | 649 | http://thanjavur.nic.in/ |
| TK | Thoothukudi | Thoothukudi (Tuticorin) | 1,565,743 | 4,621 | 339 | http://thoothukudi.nic.in/ |
| TL | Tiruvallur | Tiruvallur | 2,738,866 | 3,424 | 800 | http://www.tiruvallur.tn.nic.in/ |
| TR | Tiruvarur | Tiruvarur | 1,165,213 | 2,161 | 539 | http://www.tiruvarur.tn.nic.in/ |
| TV | Tiruvannamalai | Tiruvannaamalai | 2,881,853 | 6,191 | 466 | http://www.tiruvannamalai.tn.nic.in/ |
| VE | Vellore | Vellore | 3,482,970 | 6,077 | 573 | http://vellore.nic.in/ |
| VL | Viluppuram | Viluppuram | 2,943,917 | 7,217 | 408 | http://www.viluppuram.tn.nic.in/ |
| VR | Virudhunagar | Virudhunagar | 1201789 | 3,446 | 347 | http://www.virudhunagar.tn.nic.in/ |
Read more about this topic: List Of Districts Of India