Rajwatia 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 Rajwatia was 4,189 which includes 2,215 males and 1,974 females. Rajwatia covers 1503.7 ha area. Pincode of Rajwatia is 845101.