Ghailarh is a Sub-District (Tehsil/Block/Mandal) in the Madhepura District of Bihar. As par Census 2011 information the sub-district code of Ghailarh is 01160. There are about 13 sub-districts in Madhepura and Ghailarh is one of them. Alamnagar, Bihariganj, Chausa, Gamharia, Gwalpara, Kishanganj, Kumarkhand, Madhepura, Murliganj, Puraini, Shankarpur, Singheshwar etc. are other sub-districts in Madhepura.There are about 15 villages in Ghailarh sub-district, which you can browse from villages list.