Bhadahar is a village in Kusheshwar Asthan tehsil in district of Darbhanga, Bihar, India. As per the data provided by Census of India in 2011, total population of Bhadahar was 4,771 which includes 2,516 males and 2,255 females. Bhadahar covers 268 ha area. Pincode of Bhadahar is N/A.