Jamunbhar is a village in Adapur tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Jamunbhar was 2,736 which includes 1,420 males and 1,316 females. Jamunbhar covers 262.6 ha area. Pincode of Jamunbhar is 845302.