Uvinza is an administrative ward and town in Uvinza District of Kigoma Region in Tanzania. The town is the district capital of Uvinza District. The ward covers an area of 1,502 km2 (580 sq mi), and has an average elevation of 1,073 m (3,520 ft). The town is home to salt mining industry in Kigoma region. Uvinza town is situated between where the Ruchugi River and Malagarasi Rivers merge. In 2016 the Tanzania National Bureau of Statistics report there were 24,122 people in the ward, from 35,231 in 2012. Prior to 2014 the Basanza was a village in the Uvinza Ward before splitting off to form its own ward.