Banbhag is a village in Krityanand Nagar tehsil in district of Purnia, Bihar, India. As per the data provided by Census of India in 2011, total population of Banbhag was 11,439 which includes 5,982 males and 5,457 females. Banbhag covers 628 ha area. Pincode of Banbhag is N/A.