Siyar Buzurg is a village in Bansgaon tehsil in district of Gorakhpur, Uttar Pradesh, India. As per the data provided by Census of India in 2011, total population of Siyar Buzurg was 942 which includes 491 males and 451 females. Siyar Buzurg covers 35.11 ha area. Pincode of Siyar Buzurg is 273411.