Koila Belwa is a village in Kalyanpur tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Koila Belwa was 8,583 which includes 4,443 males and 4,140 females. Koila Belwa covers 737 ha area. Pincode of Koila Belwa is 845412.