Bithan is a Sub-District (Tehsil/Block/Mandal) in the Samastipur District of Bihar. As par Census 2011 information the sub-district code of Bithan is 01303. There are about 20 sub-districts in Samastipur and Bithan is one of them. Bibhutpur, Dalsinghsarai, Hasanpur, Kalyanpur, Khanpur, Mohanpur, Mohiuddinagar, Morwa, Patori, Pusa, Rosera, Samastipur, Sarairanjan, Shivaji Nagar, Singhia, Tajpur, Ujiarpur, Vidyapati Nagar, Warisnagar etc. are other sub-districts in Samastipur.There are about 55 villages in Bithan sub-district, which you can browse from villages list.