Mainpura is a village in Dinapur Cum Khagaul tehsil in district of Patna, Bihar, India. As per the data provided by Census of India in 2011, total population of Mainpura was 2,447 which includes 1,351 males and 1,096 females. Mainpura covers 126 ha area. Pincode of Mainpura is 801503.