Kalyanpur Mathia 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 Mathia was 1,148 which includes 582 males and 566 females. Kalyanpur Mathia covers 39.44 ha area. Pincode of Kalyanpur Mathia is N/A.