Ashaiman Municipal with its Administrative capital Ashaiman forms part  of the twenty six (26) Metropolis, Municipalities and Districts in the Greater Accra Region. 

It was carved out of the then Tema Municipality, now Tema Metropolitan Authority, as one of the newly created Districts in 2008 by LI 1889 and Local Government Act of 1993 (Act 462).

Ashaiman Municipal Assembly covers a total land area of about forty five (45) square kilometers

The Municipality shares boundaries with Tema Metropolitan to the east, Ledzokuku Municipal to the south, Adentan Municipal to the north and to the west with La-Nkwantanang-Madina Municipal.

The population of the Municipality according to 2010 population and housing census stands at 190,972 with 93,727 males and 97,245 females.