From the Wikipedia page 
Songwe is a region of Tanzania created on 29 January 2016 from the western half of Mbeya Region. Its capital is Vwawa.
Songwe Region is divided into the town of Tunduma and the districts of Ileje, Mbozi, Momba and Songwe. Tunduma is subdivided into 15 wards and 71 mitaa, while the four districts are subdivided into 11 divisions, 79 wards, 307 villages and 1493 hamlets.