Bagha Kusmar is a village in Laukaha tehsil in district of Madhubani, Bihar, India. As per the data provided by Census of India in 2011, total population of Bagha Kusmar was 11,380 which includes 5,737 males and 5,643 females. Bagha Kusmar covers 870 ha area. Pincode of Bagha Kusmar is 847409.