Yilo Krobo Municipal Assembly forms part of the twenty six (26) Municipalities and Districts in the Eastern Region of Ghana. It covers a total estimated surface area of 1,201 square kilometers of the total area of Eastern Region. The Municipality was established by Legislative Instrument (L.I) 2051 .
The Administrative capital of the Municipal is Somanya. The Municipal shares boundaries with New Juaben Municipal and Akwapem Norh District to the west respectively,to the east with Lower Manya Krobo District,to the north with Fanteakwa Districts and to the south with Dangme West District. The population of the municipality according to 2010 population and housing census stands at 87,847 with 42,378 males and 45,469 females.