The Wassa Amenfi West Municipal is one of the 261 Metropolitan, Municipal and District Assemblies (MMDAs) in Ghana, and forms part of the 14 MMDAs in the Western Region.

The Municipality which was part of the erstwhile Wassa Amenfi District was established under the Legislative Instrument 1757 in 2004 with the administrative capital as Asankrangwa.

Wassa Amenfi West Municipal is located between Latitude 400’N and 500 40’N and Longitudes 10 45’ W and 20 10’W and it has a total land area of 1,448.56 square kilometres.

The Wassa Amenfi West Municipality is bounded to the west by Sefwi Akontombra District and Aowin Municipal, the south by Jomoro Municipal, Ellembelle District and Nzema East Municipal, the east by Prestea Huni Valley Municipal and Amenfi Central District.

The population of the Wassa Amenfi West Municipality according to 2021 population and housing census stands at 129,882 with 68,292 males and 61,590 females.