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Districts in tamilnadu
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  • District (zilā) is an administrative division of an Indian state or territory. Districts are further subdivided into sub-divisions, and in others directly into tehsils or talukas.

  • The Indian state of Tamil Nadu has 38 districts after several splits of the original 13 districts at the formation of the state on 1 November 1956. The states are further divided into taluks and smaller administrative units.

  • At the time of Independence, Madras Presidency in India was made up of 26 districts, of which 12 districts were found in the present-day of Tamil Nadu, namely, Chingleput (Chengalpattu), Coimbatore (Coimbatore), Nilgiris (NIlgiris), North Arcot, Madras(Chennai), Madura(Madurai), Ramnad(Ramanathapuram), Salem(Salem), South Arcot, Tanjore(Thanjavur), Tinnevely(Tirunelveli), and Trichinopoly(Trichy).

  • After Indian independence in 1947, the Pudukkottai Princely State was amalgamated with Indian Union           on 4 March 1948 and became a division in Trichinopoly (trichy) district.

  • On 26 January 1950, Madras Province was formed as Madras State by the Government of India.

  • Coastal Andhra and Rayalaseema were separated From Madras to form Andhra State in 1953

  • while South Canara and Bellary districts were merged with Mysore State to form Karnataka state, and Malabar District with the State of Travancore-Cochin to form Kerala in 1956.

  • Madras state (Chennai) was formed on 1 November 1956, with 13 southern districts of Madras Presidency. They are as follow : Chengalpattu, Coimbatore, Kanyakumari, Madras, Madurai, Nilgiris, North Arcot, Ramanathapuram, Salem, South Arcot, Thanjavur, Tiruchirappalli and Tirunelveli.

  • On 2 October 1966, Dharmapuri district was bifurcated from the erstwhile Salem district comprising Dharmapuri, Harur, Hosur and Krishnagiri taluks.

  •  In 1969, Madras State was renamed as Tamil Nadu.

  • On 14 January 1974, Pudukkottai district was formed from the parts of Tiruchirappalli and Thanjavur districts with Alangudi , Thirumayam, and  Aranthangi taluks.

  • On 31 August 1979, Erode district was bifurcated from the Coimbatore district comprising Erode ,Bhavani, and Sathyamangalam talukas.

  • On 8 March 1985, Virudhunagar and Sivaganga districts were bifurcated from the erstwhile Ramanathapuram district with Sivaganga district comprising Sivaganga, Manamadurai,Tirupattur, Karaikudi, Devakottai, Tirupattur, Karaikudi, Devakottai,and Ilaiyangudi taluks and Virudhunagar district comprising Virudhunagar, Tiruchuly, Aruppukottai, Srivilliputhur, Sattur and Rajapalayam taluks.

  • On 15 September 1985, Dindigul district was bifurcated from the erstwhile Madurai district comprising Dindigul, Palani,Kodaikanal taluks.

  • On 20 October 1986, Thoothukudi district was bifurcated from the erstwhile Tirunelveli district comprising Thoothukudi, Ottapidaram,Tiruvaikuntam taluks.

  • In 30 September 1989, Tiruvannamalai and Vellore districts were bifurcated from the erstwhile North Arcot district with Tiruvannamalai district comprising Tiruvannamalai, Arni, Cheyyar, Polur,Vandavasi, and Chengam taluks and Vellore district comprising Arakkonam, Arcot, Vellore, Vaniyambadi ,Gudiyatham, Tirupattur, and Walaja taluks.

  • On 18 October 1991, Nagapattinam was bifurcated from the erstwhile Thanjavur district comprising Tiruvarur, Mayiladuthurai, Manargudi, Nagapattinam divisions and Valangaiman taluk on Kumabakonam division.

  • On 30 September 1993, Cuddalore and Viluppuram districts were bifurcated from the erstwhile South Arcot district with Cuddalore district comprising Cuddalore, Chidambaram and Vriddhachalam taluks and Villupuram district comprising Kallakuruchi, Villupuram, Tirukkoyilur and Tindivanam.

  • On 30 September 1995, Karur and Perambalur districts were trifurcated from the erstwhile Tiruchirappalli district with Karur district comprising Karur, Kulithalai and Manapparai taluks and Perambalur district comprising Perambalur and Kunnam taluks.

  • On 25 July 1996, Theni district was bifurcated from the erstwhile from Madurai district comprising Theni, Bodinayakanur, Periyakulam, Uthamapalayam and Andipatti taluks.

  • On 1 January 1997 Tiruvarur was bifurcated and   formed from the parts of erstwhile Nagapattinam and Thanjavur districts comprising Tiruvarur, Nannilam, Kudavasal, Needamangalam, Mannargudi, Thiruthuraipoondi taluks from Nagappatinam district and Valangaiman taluk from Thanjavur district.

  • On 1 January 1997, Namakkal district was bifurcated from the erstwhile Salem district comprising Namakkal, Tiruchengode, Rasipuram and Paramathi-Velur taluks.

  • On 1 July 1997, Kanchipuram and Tiruvallur districts were bifurcated from the erstwhile Chengalpattu district (District ceased) with Kanchipuram district comprising Kanchipuram, Sriperumbudur, Uthiramerur, Chengalpattu, Tambaram, Tirukalukundram, Maduranthakam and Cheyyur taluks and Tiruvallur district comprising Tiruvallur, Tiruttani taluks and Uthukkottai and Pallipattu sub-taluks separated from Chengalpattu District along with Ponneri and Gummidipoondi taluks of Saidapet revenue division.

  • On 9 February 2004, Krishnagiri district was bifurcated from the erstwhile Dharmapuri district comprising Krishnagiri, Hosur, Pochampalli, Uthangarai and Denkanikottai taluks. 

  • On 19 November 2007, Ariyalur district was bifurcated from the erstwhile Perambalur district comprising Ariyalur, Udayarpalayam and Sendurai taluks.

  • On 24 October 2009, Tiruppur district was formed from the parts of Coimbatore and Erode districts with Tiruppur, Udumalpet, Palladam and parts of Avinashi taluks of Coimbatore districts and Dharapuram, Kangeyam and parts of Perundurai taluks of Erode district.

  • On 5 January 2018, Chennai district altered its borders with increase in area by the annexation of Madhavaram, Maduravoyal, Ambattur, Tiruvottriyur taluks and parts of Ponneri taluk of Tiruvallur and Alandur and Sholinganallur taluks of Kanchipuram (present day Chengalpattu) districts.

  • On 22 November 2019, Tenkasi district was bifurcated from the erstwhile Tirunelveli district comprising Tenkasi, Sengottai, Kadayanallur, Sivagiri, Veerakeralampudur, Sankarankovil, Thiruvenkatam and Alangulam taluks.

  • On 26 November 2019, Kallakurichi district was bifurcated from the erstwhile Viluppuram district comprising Kallakurichi, Sankarapuram, Chinnasalem, Ulundurpet, Thirukovilur and Kalvarayanmalai taluks.

  • On 29 November 2019, Tirupattur and Ranipet districts were trifurcated from the erstwhile Vellore district with Tirupattur district comprising Tirupattur, Vaniyambadi, Natrampalli and Ambur taluks and Ranipet district comprising Walajah, Arcot, Nemili and Arakkonam taluks.

  • On 30 November 2019, Chengalpattu district was bifurcated from the erstwhile Kanchipuram district comprising Chengalpattu, Madurantakam, Cheyyar, Tiruporur, Tirukalukundram,Tambaram, Pallavaram, and Vandalur taluks.

2020 - Present
  • Finally On 24 March 2020, Mayiladuthurai district was Bifurcated  from the erstwhile Nagapattinam district comprising Mayiladuthurai, Sirkazhi, Tharangambadi and Kuthaalam taluka.


Chief Minister Thiru.Edapaddi palaniswami Said Hereafter No bifurcation Of any Districts or No New District Will Take Place.

District - Stats

*As of 31.12.2020


Total District 

It has total 38 Districts

Image by Riccardo Pierri

Biggest District

By area Erode District is Larger.

Image by Milad B. Fakurian

Smallest District

By Area wise Chennai Is the Smallest District.

Route Planning

Last Formed 

Mayiladuthurai District Formed At april 2020

new Districts by years

Pre Independence = 26

1947-1959 = 13

1960-1979 = 3

1980-1999 = 11

2000-2019 = 8

2020 -         = 1


Tamilnadu Map

List of Districts
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