Gainsari is a village in Tulsipur tehsil in district of Balrampur, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Gainsari was 7,116 which includes 3,798 males and 3,318 females. Gainsari covers 374.89 ha area. Pincode of Gainsari is 271210.