Birim Central Municipal forms part of the twenty six (26) Municipalities and Districts in the Eastern Region of Ghana. The Administrative Capital of the municipal is Akim Oda. The Municipal shares boundaries with Akyemansa District and Denkyembour District respectively to the North, to the south with Birim South District, to the east with West Akim Municipal and the west with Assin North Municipal. The Municipality was established by Legislative Instrument (L.I) 1863.
The population of the municipality according to 2010 population and housing census stands at 144,869 with 69,304 males and 75,565 females.