In 1987 the Vinza population was estimated to be 10,000 ( 1 ) .
The Vinza ( Swahili : Wavinza ) are an ethnic and linguistic group based in Kigoma Region , Tanzania .
In 1987 the Wavinza population was estimated to be 10,000 ( 1 ) .
The Vinza ( Swahili : Wavinza ) are an ethnic and linguistic group based in Kigoma Region , Tanzania .