Rampur Bairiya is a village in Kesaria tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Rampur Bairiya was 617 which includes 312 males and 305 females. Rampur Bairiya covers 56.7 ha area. Pincode of Rampur Bairiya is 845423.