Location in Tamil Nadu, India
|Coordinates: 11°52′00″N 78°07′00″E / 11.8667°N 78.1167°ECoordinates: 11°52′00″N 78°07′00″E / 11.8667°N 78.1167°E|
|Time zone||IST (UTC+5:30)|
As of 2001 India census, Kadayampatti had a population of 9691. Males constitute 54% of the population and females 46%. Kadayampatti has an average literacy rate of 53%, lower than the national average of 59.5%: male literacy is 61%, and female literacy is 44%. In Kadayampatti, 12% of the population is under 6 years of age. Area: 3.6 sq.km – Density: 2,656.9 inh./sq.km 
Swamy Venkata Ramana Temple is in Chinna Thirupathy, 10 km from Kadayampatti.
- "Census of India 2001: Data from the 2001 Census, including cities, villages and towns (Provisional)". Census Commission of India. Archived from the original on 2004-06-16. Retrieved 2008-11-01.