Brahmotar Gachh is a village in Bahadurganj tehsil in district of Kishanganj, Bihar, India. As per the data provided by Census of India in 2011, total population of Brahmotar Gachh was 471 which includes 243 males and 228 females. Brahmotar Gachh covers 33 ha area. Pincode of Brahmotar Gachh is N/A.