Viluppuram is a municipality and the administrative headquarters of Viluppuram district, the largest district in the state of Tamil Nadu, India. It is well connected by both road and rail to all the important cities in Tamil Nadu. The town is a major railway junction, and National Highway 45 passes through it. Agriculture is its main source of income. As of Government of India 2014 data, Viluppuram had a population of 121198. The town's literacy rate has been recorded as 90.16% by Census 2011.