As of 2001[update] India census, Vilangudi had a population of 30,884. Males constitute 50% of the population and females 50%. Vilangudi has an average literacy rate of 83%, higher than the national average of 59.5%: male literacy is 87%, and female literacy is 79%. In Vilangudi, 8% of the population is under 6 years of age. Vilangudi has its ground water table at an average depth of 170 feet. This is one of the self-sustained areas in the outskirts of the city.