Basantpur is a Sub-District (Tehsil/Block/Mandal) in the Siwan District of Bihar. As par Census 2011 information the sub-district code of Basantpur is 01234. There are about 19 sub-districts in Siwan and Basantpur is one of them. Andar, Barharia, Bhagwanpur Hat, Darauli, Daraundha, Goriakothi, Guthani, Hasanpura, Hussainganj, Lakri Nabiganj, Maharajganj, Mairwa, Nautan, Pachrukhi, Raghunathpur, Siswan, Siwan, Ziradei etc. are other sub-districts in Siwan.There are about 41 villages in Basantpur sub-district, which you can browse from villages list.