Mamrej Pur is a village in Bighapur tehsil in district of Unnao, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Mamrej Pur was 2,326 which includes 1,194 males and 1,132 females. Mamrej Pur covers 450.41 ha area. Pincode of Mamrej Pur is 229506.