Gangarai is a village in Maharajganj tehsil in district of Mahrajganj, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Gangarai was 2,475 which includes 1,291 males and 1,184 females. Gangarai covers 169.46 ha area. Pincode of Gangarai is 273303.