Island Beach is a barrier peninsula that separates the Atlantic Ocean from Barnegat Bay.
It joins Squan Beach at the north end, and terminates at Barnegat Inlet to the south.
It possesses no special features differing from Squan Beach, being of about the same average width.
Barnegat Bay lies along the whole length of Island Beach on its inner side, giving it a seaward appearance, and constituting an attractive feature of its location.
The former Borough of Island Beach, a sparsely populated municipality comprising the bulk of the peninsula, lasted from 1933 until July 6, 1965, when it was absorbed into Berkeley Township;[4] the territory is now Island Beach State Park.