Bihari Buzurg is a village in Guthani tehsil in district of Siwan, Bihar, India. As per the data provided by Census of India in 2011, total population of Bihari Buzurg was 2,080 which includes 1,043 males and 1,037 females. Bihari Buzurg covers 140 ha area. Pincode of Bihari Buzurg is 841235.