Mainhawa is a village in Pharenda tehsil in district of Mahrajganj, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Mainhawa was 5,097 which includes 2,619 males and 2,478 females. Mainhawa covers 403.6 ha area. Pincode of Mainhawa is 273165.