Hariharpur is a village in Singhwara tehsil in district of Darbhanga, Bihar, India. As per the data provided by Census of India in 2011, total population of Hariharpur was 13,990 which includes 7,153 males and 6,837 females. Hariharpur covers 1081 ha area. Pincode of Hariharpur is 847306.