Mian Bairo is a village in Bhagwanpur tehsil in district of Vaishali, Bihar, India. As per the data provided by Census of India in 2011, total population of Mian Bairo was 1,774 which includes 915 males and 859 females. Mian Bairo covers 62 ha area. Pincode of Mian Bairo is 844131.