Harsaio is a village in Ghanghata tehsil in district of Sant Kabir Nagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Harsaio was 613 which includes 321 males and 292 females. Harsaio covers 66.51 ha area. Pincode of Harsaio is 272176.