Ahirauliya is a village in Ramgarhwa tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Ahirauliya was 12,620 which includes 6,720 males and 5,900 females. Ahirauliya covers 1682.2 ha area. Pincode of Ahirauliya is 845433.