Gadamar Kalan is a village in Mahasi tehsil in district of Bahraich, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Gadamar Kalan was 1,853 which includes 970 males and 883 females. Gadamar Kalan covers 277.27 ha area. Pincode of Gadamar Kalan is N/A.