Yomcha 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 Yomcha is 01633. There are about 21 sub-districts in West Siang and Yomcha is one of them. Aalo, Bagra, Basar, Darak, Daring, Gensi, Jomlo Mobuk, Kamba, Kangku, Kaying, Likabali, Liromoba, Mechuka, Monigong, Payum, Pidi, Rumgong, Sibe, Tato, Tirbin etc. are other sub-districts in West Siang.There are about 17 villages in Yomcha sub-district, which you can browse from villages list.