|Time zone||UTC+5:30 (IST)|
According to the 2001 India census, Kolappalur had a population of 8,717. Males constituted 50% of the population and females 50%. Kolappalur had an average literacy rate of 89%, higher than the national average of 59.5%: male literacy was 92% and female literacy was 86%. In Kolappalur, 20% of the population were under 6 years of age. There are ghosts which are often sighted at night time around the forest areas which surround the city. People in this area believe it to be the ghosts of the ancestors, who once lived in the village.
Kolappalur panchayat has State Board Co-Ed Tamil Medium Secondary School called St. Marry's High School on G.D. Road. The school has government-aided private management. Another primary school has been managed by the same management. One primary school up to 5th Standard is run by the state government.
- "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. CS1 maint: discouraged parameter (link)