Kalyanpur is a Sub-District (Tehsil/Block/Mandal) in the Purba Champaran District of Bihar. As par Census 2011 information the sub-district code of Kalyanpur is 01048. There are about 27 sub-districts in Purba Champaran and Kalyanpur is one of them. Adapur, Areraj, Banjaria, Bankatwa, Chakia, Chiraia, Dhaka, Ghorasahan, Harsidhi, Kesaria, Kotwa, Madhuban, Mehsi, Motihari, Narkatia, Paharpur, Pakri Dayal, Patahi, Phenhara, Piprakothi, Ramgarhwa, Raxaul, Sangrampur, Sugauli, Tetaria, Turkaulia etc. are other sub-districts in Purba Champaran.There are about 96 villages in Kalyanpur sub-district, which you can browse from villages list.