Between the August River in the west, the May River in the east, and the Hindenburg Range in the south.

West Mian is spoken in and around Yapsiei station; East Mian is spoken in the villages around Mianmin airstrip (Timeilmin, Temsakmin, and Sokamin), and the villages of Gubil, Fiak, and Hotmin.

18 villages: Amaromin, Bovaripmin, Kusarenmin, Mawaimin, Sogamin, Temsapmin, Timelmin, Wameimin, Avaromin-Aki, Ivikmin-Tabu, Ivikmin-Sepik, Karenmin, Kimiasomin, Sanman, Someikmin-Aki, Someimin-Tabu, Urapmin, and Usage.

Some of these villages may speak Wagarabai [Suganga].

"Sandaun Province, Telefomin district, north Fak and Aki river valleys, August river headwaters; East Sepik Province, Ambunti-Dreikikir district, upper May river, Nenebil, Suganga, Blimo, and Wagarabai."