Bair Gachhi is a village in Kadwa tehsil in district of Katihar, Bihar, India. As per the data provided by Census of India in 2011, total population of Bair Gachhi was 313 which includes 160 males and 153 females. Bair Gachhi covers 170 ha area. Pincode of Bair Gachhi is N/A.