Damrapur is a village in Mainatanr tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Damrapur was 2,380 which includes 1,257 males and 1,123 females. Damrapur covers 342.4 ha area. Pincode of Damrapur is 845451.