Gadhra is a census town in Purbi Singhbum district in the state of Jharkhand.
According to the 2001 India census report, Gadhra had a population of 15,742 inhabitants. Males constitute 53% of the population and females constitute 47% of the population Gadhra has an average literacy rate of 65%, which is higher than the national average literacy rate is 59.5%. The male literacy rate is 75%, and the female literacy rate is 55%. In Gadhra, 14% of the population is less than six years of age.