Grand Bahama is the northernmost of the islands of the Bahamas, and the closest major island to the United States, lying 90 kilometres (56 mi) off the state of Florida. Grand Bahama is the fourth largest island in the Bahamas island chain of approximately 700 islands and 2,400 cays. The island is approximately 150 kilometres (93 mi) long, west to east, and 20 kilometres (12 mi) at its widest point north to south.

The Abaco Islands lie in the northern Bahamas and comprise the main islands of Great Abaco and Little Abaco, together with the smaller Wood Cay, Elbow Cay, Lubbers Quarters Cay, Green Turtle Cay, Great Guana Cay, Castaway Cay, Man-o-War Cay, Stranger’s Cay, Umbrella Cay, Walker’s Cay, Little Grand Cay, and Moore’s Island.