Mainahwa 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 Mainahwa was 2,697 which includes 1,465 males and 1,232 females. Mainahwa covers 435.62 ha area. Pincode of Mainahwa is 271205.