Ahirauliya is a village in Kotwa tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Ahirauliya was 12,111 which includes 6,370 males and 5,741 females. Ahirauliya covers 824.1 ha area. Pincode of Ahirauliya is 845417.