As of 2001[update] India census,[2] Keezhapavur had a population of 19,958. Males constitute 50% of the population and females 50%. Keezhapavur has an average literacy rate of 67%, higher than the national average of 59.5%: male literacy is 76%, and female literacy is 57%. In Keezhapavur, 12% of the population is under 6 years of age.