Karpi is a Sub-District (Tehsil/Block/Mandal) in the Arwal District of Bihar. As par Census 2011 information the sub-district code of Karpi is 01544. There are about 5 sub-districts in Arwal and Karpi is one of them. Arwal, Kaler, Kurtha, Sonbhadra Banshi Suryapur etc. are other sub-districts in Arwal.There are about 82 villages in Karpi sub-district, which you can browse from villages list.