Hajpurwa is a village in Kalyanpur tehsil in district of Samastipur, Bihar, India. As per the data provided by Census of India in 2011, total population of Hajpurwa was 5,380 which includes 2,664 males and 2,716 females. Hajpurwa covers 380 ha area. Pincode of Hajpurwa is 848125.