Kalyanpur Birt is a village in Kotwa tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Kalyanpur Birt was 1,472 which includes 762 males and 710 females. Kalyanpur Birt covers 104.4 ha area. Pincode of Kalyanpur Birt is 845437.