Banasanju is a village in Tantnagar tehsil in district of Pashchimi Singhbhum, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Banasanju was 261 which includes 118 males and 143 females. Banasanju covers 50.13 ha area. Pincode of Banasanju is 833201.