Bamhanbai is a village in Hazaribag tehsil in district of Hazaribagh, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Bamhanbai was 1,741 which includes 921 males and 820 females. Bamhanbai covers 291 ha area. Pincode of Bamhanbai is 825301.