Hariharpur Kalan is a village in Goriakothi tehsil in district of Siwan, Bihar, India. As per the data provided by Census of India in 2011, total population of Hariharpur Kalan was 3,631 which includes 1,777 males and 1,854 females. Hariharpur Kalan covers 165 ha area. Pincode of Hariharpur Kalan is 841439.