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.

It lies within Longitudes 1° 05’ East and 1° 25 West and Latitudes 6 ° 05’ North and 6° 40 South and covers an area of about 295sq. km.

The Assin Foso Municipality shares common boundaries with Twifo Atti Morkwa District on the west, Assin South District on the south, Asikuma Odoben Brakwa District and Ajumako Enyan Esiam District on the east, Upper Denkyira East Municipal on the north-west and Adansi South 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.