Mahdauli is a village in Bhagwanpur tehsil in district of Begusarai, Bihar, India. As per the data provided by Census of India in 2011, total population of Mahdauli was 4,020 which includes 2,134 males and 1,886 females. Mahdauli covers 213 ha area. Pincode of Mahdauli is 851119.