Hariharpur is a village in Chhatapur tehsil in district of Supaul, Bihar, India. As per the data provided by Census of India in 2011, total population of Hariharpur was 7,849 which includes 4,029 males and 3,820 females. Hariharpur covers 468 ha area. Pincode of Hariharpur is 852137.