Poo is a Sub-District (Tehsil/Block/Mandal) in the Kinnaur District of Himachal Pradesh. As par Census 2011 information the sub-district code of Poo is 00195. There are about 6 sub-districts in Kinnaur and Poo is one of them. Hangrang, Kalpa, Morang, Nichar, Sangla etc. are other sub-districts in Kinnaur.There are about 97 villages in Poo sub-district, which you can browse from villages list.