Gopalpur Bairgachhi 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 Gopalpur Bairgachhi was 686 which includes 304 males and 382 females. Gopalpur Bairgachhi covers 86 ha area. Pincode of Gopalpur Bairgachhi is 855101.