Banahamtu 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 Banahamtu was 580 which includes 288 males and 292 females. Banahamtu covers 271 ha area. Pincode of Banahamtu is 833201.