Purnahiya is a Sub-District (Tehsil/Block/Mandal) in the Sheohar District of Bihar. As par Census 2011 information the sub-district code of Purnahiya is 01058. There are about 5 sub-districts in Sheohar and Purnahiya is one of them. Dumri Katsari, Piprarhi, Sheohar, Tariani Chowk etc. are other sub-districts in Sheohar.There are about 26 villages in Purnahiya sub-district, which you can browse from villages list.