The Ada West District is among the sixteen districts in the Greater Accra Region and it is situated in the south-eastern corner of Ghana.
It is carved out of the former Dangme East in the year 2012 and it is established by the Legislative Instrument 2129 of 2012 with its administrative capital as Sege.
The District lies between Latitudes 5°45’S and 6°00’N and Longitude 0°20’W and 0°35’E.
The total land area of the District is approximately 323.72 Square km, which is about 10% of the total land size of the Greater Accra Region.
The District shares common boundary with the North Tongu District of the Volta Region to the North, Ada East to the East, Ningo Prampram District to the West and to the South by the Gulf of Guinea, which stretches over 45 Kilometres (27.9 miles) from Wokumagbe through Goi to Kablevu.
Sege is the District capital, and it lies about 80 Kilometres from Accra on the Accra –Aflao road.
The population of the district according to 2010 population and housing census stands at 59,124 with 28,579 males and 30,545 females.