Kalyanpur Madhubani is a village in Barauli tehsil in district of Gopalganj, Bihar, India. As per the data provided by Census of India in 2011, total population of Kalyanpur Madhubani was 3,107 which includes 1,531 males and 1,576 females. Kalyanpur Madhubani covers 224.2 ha area. Pincode of Kalyanpur Madhubani is 841405.