980,000 (2006). 73% are in the traditional area.
Northwest central, Tabora Region between Lake Victoria and Lake Rukwa; also in Rukwa and Kigoma regions.
Latin script [Latn].
Smaller groups (Konongo, Galla, Sumbwa) were part of Unyamwezi Kingdom and are still often considered part of the Nyamwezi people group by the Nyamwezi. Christian, Muslim, traditional religion.