The gulf is named after the district center Dikili.
The gulf is mostly in İzmir Province and partly in Balıkesir Province including Sarımsaklı beaches and Altınova of Ayvalık district .
The southernmost point of the gulf is Bademli, a coastal village.
The distance between northern and southernmost points is about 30 kilometres (19 mi).
[1] Turkish state highway D.550 runs along the Dikili Gulf coastline.