Ahirauliya is a village in Bagaha tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Ahirauliya was 1,609 which includes 827 males and 782 females. Ahirauliya covers 138.4 ha area. Pincode of Ahirauliya is 845106.