Wasa territory covers 9,638 km2, almost the same as Central Region (9,791 km2); Western Region as a whole covers 24,293 km2.
Towns within Wasa territory, or with a primarily Wasa population, include Tarkwa, one of the highest producers of gold and cocoa in Ghana, and Adum Banso, a former power in southern Ghana.
Wasa is the largest tribe in Western Region in terms of land and population.
- Olson, James Stuart (1996). The peoples of Africa: an ethnohistorical dictionary. Santa Barbara, CA: Greenwood Press. pp. 589–590. ISBN 978-0-313-27918-8.
Aidoo, Daniel Ato, (2015), Defining Wasa.