Tamil Nadu (; Tamil: [ˈtamiɻ ˈnaːɽɯ] (listen), abbr. TN) is a state in southern India. It is the tenth largest Indian state by area and the sixth largest by population. Its capital and largest city is Chennai. Tamil Nadu is the home of the Tamil people, whose Tamil language—one of the longest surviving classical languages in the world—is widely spoken in the state and serves as its official language. The state lies in the southernmost part of the Indian peninsula, and is bordered by the Indian union territory of Puducherry and the states of Kerala, Karnataka, and Andhra Pradesh, as well as an international maritime border with Sri Lanka. It is bounded by the Western Ghats in the west, the Eastern Ghats in the north, the Bay of Bengal in the east, the Gulf of Mannar and Palk Strait to the south-east, and the Indian Ocean in the south. The at-large Tamilakam region that has been inhabited by Tamils was under several regimes, such as the Sangam era rulers of the Chera, Chola, and Pandya clans, the Pallava dynasty, and the later Vijayanagara Empire, all of which shaped the state's cuisine, culture, and architecture. After the fall of the Kingdom of Mysore, the British colonised the region and administered it as part of the Madras Presidency, headquartered at the city of Madras, now known as Chennai. After India's Independence in 1947, the Madras State came into existence, whose borders were linguistically redrawn by the States Reorganisation Act, 1956, losing territory to Kerala, Karnataka and Andhra Pradesh. The state was renamed as Tamil Nadu in 1969. It is home to a number of historic buildings, multi-religious pilgrimage sites, hill stations and three World Heritage Sites.The economy of Tamil Nadu is the second-largest in India, with a gross state domestic product (GSDP) of ₹24.85 lakh crore (US$310 billion) and has the country's 11th-highest GSDP per capita of ₹225,106 (US$2,800). It ranks 11th among all Indian states in human development index. Tamil Nadu is the most urbanised state in India, and one of the most industrialised states; the manufacturing sector accounts for more than one-third of the state's GDP. Its tourism industry is the largest among the Indian states. The Tamil film industry plays an influential role in the state's popular culture.

Nagercoil ("Temple of the Nāgas", Nagaraja- Hindu Temple) is a city and the administrative headquarters of Kanyakumari District in Tamil Nadu state, India. Situated close to the tip of the Indian peninsula, it lies on an undulating terrain between the Western Ghats and the Arabian Sea. Nagercoil Corporation is the 12th biggest city of Tamil Nadu. The present city of Nagercoil grew around Kottar, a mercantile town that dates back to the Sangam period. Kottar is now a locality within the city limits. For 735 years it was a central part of the erstwhile Travancore kingdom and later Kerala State - till almost a decade after India's independence from Britain in 1947. In 1956, Kanyakumari District, along with the town, was merged with Tamil Nadu. With a maturing Technology startup ecosystem, the city is one of the 50 Indian cities to be ranked in the World Startup Index of 1,000 cities. Nagercoil is a centre for a range of economic activities in the small but densely-populated Kanyakumari District. Economic activities in around the city include tourism, wind energy, IT services, marine fish production and exports, rubber and cloves plantations, agro-crops, floral production, manufacture of fishnets, rubber products among other activities.‘Nagercoil Cloves’ is a distinct quality of dried cloves in the spices market, noted for its aroma and medicinal value. Cloves, pepper and other spices are grown in estates in the Western Ghats, outside the town. Nagercoil is also the nearest city to the ISRO Propulsion Complex, Mahendragiri and the Kudankulam Nuclear Power Plant.The city, along with the district of Kanyakumari, stands at the top in many HDI parameters in Tamil Nadu state, including education, per capita income, health indices, etc.The municipality of Nagercoil was upgraded as a Municipal corporation on the eve of its 100th year as a city on February 14, 2019.