Devakottai, Sivaganga, Manamadurai and Ilaiyangudi taluks and Virudhunagar district comprising Srivilliputhur, Virudhunagar, Tiruchuli, Aruppukottai, Sattur and Rajapalayam taluks. On 15 September 1985, Dindigul district was bifurcated from the erstwhile Madurai district comprising Dindigul, Palani and Kodaikanal taluks. On 20 October 1986, Thoothukudi district was bifurcated from the erstwhile Tirunelveli district comprising Thoothukudi, Ottapidaram and Tiruvaikuntam taluks. On 30 September 1989, Tiruvannamalai and Vellore districts were bifurcated from the erstwhile North Arcot district (District ceased to exist) with Tiruvannamalai district comprising Tiruvannamalai, Arni, Vandavasi, Cheyyar, Polur and Chengam taluks and Vellore district comprising Arakkonam, Arcot, Gudiyatham, Tirupattur, Vellore, Vaniyambadi and Walaja taluks. 1990–1999 On 18 October 1991, Nagapattinam was bifurcated from the erstwhile Thanjavur district comprising Tiruvarur, Mayiladuthurai, Manargudi, Nagapattinam divisions and Valangaiman taluk from Kumabakonam division. On 30 September 1993, Cuddalore and Viluppuram districts were bifurcated from the erstwhile South Arcot district (District ceased to exist) 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 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 to exist) 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. 2000–Present 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