Tirunelveli, also known as Nellai, is a city and municipal corporation in the Indian state of Tamil Nadu. It is located on the southern part of the state, on the west bank of the Thamirabarani River. It is the administrative headquarters of the Tirunelveli District. As per the 2011 census, it had a population of 473,637 individuals, and was the seventh-largest city in the state by population.