Tirbin is a Sub-District (Tehsil/Block/Mandal) in the West Siang District of Arunachal Pradesh. As par Census 2011 information the sub-district code of Tirbin is 01635. There are about 21 sub-districts in West Siang and Tirbin is one of them. Aalo, Bagra, Basar, Darak, Daring, Gensi, Jomlo Mobuk, Kamba, Kangku, Kaying, Likabali, Liromoba, Mechuka, Monigong, Payum, Pidi, Rumgong, Sibe, Tato, Yomcha etc. are other sub-districts in West Siang.There are about 30 villages in Tirbin sub-district, which you can browse from villages list.