Jamunia is a village in Lauriya tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Jamunia was 2,116 which includes 1,079 males and 1,037 females. Jamunia covers 150.6 ha area. Pincode of Jamunia is 845453.