The Aowin Municipal lies in the mid-western part of the Western Region of Ghana between latitude five degrees twenty-five minutes and six degrees fourteen minutes North (5° 25’ N and 6° 14’ N) and longitude two degrees thirty minutes and three degrees five minutes West (2° 30’W and 3° 05’W).

The Aowin District was established on 23rd November, 1988 by the Local Government Legislative Instrument (L.I) with the administrative capital as Enchi.

The Municipality covers a total land area of 2,610.301 square kilometres. The districts that share border with Aowin Municipal are Amenfi West MunicipL to the east, Juaboso and Sefwi Akontombra Districts to the north, Jomoro Municipal to the south and the Republic of La Cote d’Ivoire to the west.  

The population of the Municipality according to 2010 population and housing census stands at 117,886 with 61,262 males and 56,624 females.