Purbari Lagunaha 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 Purbari Lagunaha was 2,429 which includes 1,242 males and 1,187 females. Purbari Lagunaha covers 209 ha area. Pincode of Purbari Lagunaha is 845101.