As of 2001 India census,Quthbullapur had a population of 225,816. Males constitute 52% of the population and females 48%. Quthbullapur has an average literacy rate of 67%, higher than the national average of 59.5%: male literacy is 73%, and female literacy is 60%. In Quthbullapur, 14% of the population is under 6 years of age.