The Assin Foso Municipal (formerly Assin Central Municipal) is one of the 261 Metropolitan, Municipal and District Assemblies (MMDAs) in Ghana and is among the 22 MMDAs in the Central Region with its administrative capital as Assin Foso.

Located at the Northern corner of the region, the Municipality was created by an Act of Parliament in 2017 through the Legislative Instrument LI 2300 of 2017, following the split of the then Assin North Municipal Assembly into Assin Foso Municipal Assembly and Assin North District Assembly.

The Municipality lies within Longitudes 1 0 05’ East and 1 0 25’ West and latitudes 6 0 05’ North and 6 04’ South and covers an area of about 295 sq. km. and comprises about 58 settlements including Assin Foso (the Municipal Capital), Assin Nyankomasi, Assin Akropong, Assin Dompim, Wurakase, Assin Awisem and others.

The Assin Foso Municipality shares common boundaries with Twifo Atti Morkwa District on the West, Assin South District on the South, Asikuma Odoben-Brakwa and Birim South Districts on the East, Upper Denkyira East Municipal on the North West and Assin North District on the North.

The population of the Municipality according to 2021 population and housing census stands at 88,753 with 43,549 male and 45,204 female.