Itarhi is a Sub-District (Tehsil/Block/Mandal) in the Buxar District of Bihar. As par Census 2011 information the sub-district code of Itarhi is 01444. There are about 11 sub-districts in Buxar and Itarhi is one of them. Barhampur, Buxar, Chakki, Chaugain, Chausa, Dumraon, Kesath, Nawanagar, Rajpur, Simri etc. are other sub-districts in Buxar.There are about 160 villages in Itarhi sub-district, which you can browse from villages list.