Hariharpur Kayasthan is a village in Rudauli tehsil in district of Faizabad, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Hariharpur Kayasthan was 917 which includes 448 males and 469 females. Hariharpur Kayasthan covers 86.93 ha area. Pincode of Hariharpur Kayasthan is 225411.