Namsai is a Sub-District (Tehsil/Block/Mandal) in the Lohit District of Arunachal Pradesh. As par Census 2011 information the sub-district code of Namsai is 01732. There are about 8 sub-districts in Lohit and Namsai is one of them. Chongkham, Lathao, Lekang, Piyong, Sunpura, Tezu, Wakro etc. are other sub-districts in Lohit.There are about 33 villages in Namsai sub-district, which you can browse from villages list.