Gopalpur Chaknai is a village in Bidupur tehsil in district of Vaishali, Bihar, India. As per the data provided by Census of India in 2011, total population of Gopalpur Chaknai was 2,038 which includes 1,115 males and 923 females. Gopalpur Chaknai covers 36 ha area. Pincode of Gopalpur Chaknai is 844503.