Chailaha is a village in Banjaria tehsil in district of Purba Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Chailaha was 15,274 which includes 8,028 males and 7,246 females. Chailaha covers 1330.6 ha area. Pincode of Chailaha is 845401.