[3] The bay is located within parts of the Michigan counties of Antrim, Charlevoix, Grand Traverse, and Leelanau.
Traverse City is situated at the south end of the bay where the Boardman River empties into the west arm.
The most notable feature of the bay is that it is bisected into East[7] and West[8] arms by the Old Mission Peninsula.
Northport Bay open to the east, except inside the arms at each end, with the Leelanau Peninsula on the West side.
The urban core of Traverse City is located at the head of the West Arm.
Besides cherries, the surrounding countryside produces grapes and is one of the centers of the Michigan wine industry.
Known for its shimmering blue water and golden sand beaches, the Grand Traverse Bay region is a popular vacation destination.