As of 2001[update] India census,[1] Thirumuruganpoondi had a population of 18,459. Males constitute 52% of the population and females 48%. A.Thirumuruganpoondi has an average literacy rate of 69%, higher than the national average of 59.5%; with 58% of the males and 42% of females literate. 12% of the population is under 6 years of age.