Sumahi Buzurg is a village in Kasya tehsil in district of Kushinagar, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Sumahi Buzurg was 3,205 which includes 1,544 males and 1,661 females. Sumahi Buzurg covers 404.6 ha area. Pincode of Sumahi Buzurg is 274401.