|Time zone||UTC+5:30 (IST)|
|Vehicle registration||TN-91( TN-31 till Jun17,2015)|
Ramalinga Swamigal, popularly called Vallalar, established the Sathyagnana Sabhai. He built a famous temple which serves lunch on all days in a year. Thousands of visitors flocks on festivals and monthly pooja dates in this temple. Vadalur is well connected by rail and road. It serves transport to all major cities like Trichy, Chennai, Tanjore, Puducherry and Kumbakonam.
The Thai Poosam function in January is a festival of this place. The Swamigal sang thousands of songs called Thiru Arutppa. This district was named after him for a while. On Thai Poosam thousands of devotees from all over Tamilnadu visits the temple. More than 10,000 stalls and other entertainment are available for at least a week for the pilgrimages. People serve food, water and fresh juices to the devotees who visit the temple.
As of 2011 India census, Vadalur had a population of 39,514. Males constitute 51% of the population and females 49%. Vadalur has an average literacy rate of 70%, higher than the national average of 59.5%: male literacy is 78%, and female literacy is 61%. In Vadalur, 11% of the population is under 6 years of age. Literacy level is high because of private schools and government schools. Vadalur runs a ceramic factory called Neycer which employs a good number of people from the same place.
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- "Census of India 2001: Data from the 2001 Census, including cities, villages and towns (Provisional)". Census Commission of India. Archived from the original on 16 June 2004. Retrieved 1 November 2008.