Thoothukudi District is one of the 38 districts of Tamil Nadu state in southern India. The district was formed by bifurcation of Tirunelveli district on 20 October 1986. Thoothukudi is the district headquarters and largest city of the district. The district is known for fishing as well as pearl cultivation, with an abundance of pearls being found in the seas offshore. Thoothukudi district has many historical sites such as Adichanallur and the ancient trade port of Korkai. Geography Thoothukudi district is situated in the south-eastern corner of Tamil Nadu. It is bounded by the districts of Virudhunagar on the north, Ramanathapuram on the north-east, Tirunelveli on the west and south-west, Tenkasi on the north-west and Gulf of Mannar on the east and southeast. The total area of the district is . Demographics According to 2011 census, Thoothukudi district had a population of 1,750,176 with a sex-ratio of 1,023 females for every 1,000 males, much above the national average of 929. A total of 183,763 were under the age of six, constituting 93,605 males and 90,158 females. It has a large numbers of Nadars (Thiruchendur, Sathankulam, Thoothukudi, Eral), Appanad Maravars (Kovilpatti, Tiruvaikuntam, Ottapidaram, Kayatharu), Vellalars (Ettayapuram, Ottapidaram),Devendra Kula velalars(Thoothukudi, Kovilpatti, Vilathikulam, Ootaipidaram), Nayakars/Naidu (Kovilpatti and Vilathikulam) and Parathars (Thoothukudi and Tiruchendur). Scheduled Castes and Scheduled Tribes accounted for 19.88% and 0.28% of the population, respectively, mostly in Ottapidaram and Puthiyamputhur. The average literacy of the district was 77.12%, compared to the national average of 72.99%. The district had a total of 462,010 households. There were a total of 748,095 workers, comprising 44,633 cultivators, 161,418 main agricultural labourers, 17,872 in house hold industries, 433,524 other workers, 90,648 marginal workers, 3,882 marginal cultivators, 39,226 marginal agricultural labourers, 4,991 marginal workers in household industries and 42,549 other marginal workers. Water bodies There are no large reservoirs in this district so the Papanasam and Manimuthar dams located in the Tirunelveli district in the Thamirabarani River's flow are the main sources of irrigation. Other than the Thamirabarani River, the river Vaipar in Vilathikulam taluk, the river Karumeni which traverses through Sathankulam, and Tiruchendur taluks, Palayakayal are all sources. Politics |} Administrative divisions Thoothukudi District is divided into three revenue divisions and ten taluks. There are forty-one revenue firkas and 480 revenue villages. The district is divided into twelve revenue blocks for rural and urban development. The twelve revenue blocks are Thoothukudi, Tiruchendur, Udangudi, Sathankulam, Thiruvaikundam, Alwarthirunagari,