Tiruvaikuntam has a temple dedicated to Vishnu, known as Tiruvaikuntapathi Swami, with a lofty gopuram. The Thiruvengada Mudaiyar Mandapam is rich with sculptures of Yallis, elephants and warriors. The Ekadasi Mandapam, which is opened on Vaikunta Ekadasi days, contains sculptures. During the period of conflict between the East India Company forces and Veera Pandiya Kattabomman, the temple served as a fort. The Kailasanathaswamy temple is another important temple and contains six inscriptions of the times of Kattabomman.
As of 2001 India census, Tiruvaikuntam had a population of 16,214. Males constituted 48% of the population and females 52%. Tiruvaikuntam had an average literacy rate of 77%, higher than the national average of 59.5%: male literacy was 81%, and female literacy was 72%. In Tiruvaikuntam, 11% of the population was under 6 years of age. Tiruvaikuntam has Considerable Appanad Maravars, Brahmins in that region