Cape Island is a man made island at the southern tip of Cape May County

Cape May County, New Jersey

-Climate:Being the southernmost point in New Jersey, Cape May has fairly mild wintertime temperatures. Contrary to that, the summertime has lower temperatures than most places in the state, making the county a popular place to escape the heat. It is in zone 7a/7b, which is the same as parts of...

, New Jersey

New Jersey

New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

. The island consists of Cape May

Cape May, New Jersey

Cape May is a city at the southern tip of Cape May Peninsula in Cape May County, New Jersey, where the Delaware Bay meets the Atlantic Ocean and is one of the country's oldest vacation resort destinations. It is part of the Ocean City Metropolitan Statistical Area. As of the 2010 United States...

, Cape May Point

Cape May Point, New Jersey

Cape May Point is a borough located at the tip of the Cape May Peninsula in Cape May County. It is part of the Ocean City Metropolitan Statistical Area. As of the 2010 United States Census, the resident population was 291...

, West Cape May

West Cape May, New Jersey

West Cape May is a Walsh Act borough in Cape May County, New Jersey, United States. It is part of the Ocean City Metropolitan Statistical Area. As of the United States 2000 Census, the borough population was 1,095....

 and portions of Lower Township

Lower Township, New Jersey

Lower Township is a township in Cape May County, New Jersey, United States. It is part of the Ocean City Metropolitan Statistical Area. As of the United States 2000 Census, the township population was 22,945....

. The island is separated from the mainland and the rest of Cape May County by the Cape May Canal

Cape May Canal

The Cape May Canal is a waterway that stretches nearly three miles from Cape May Harbor to the Delaware Bay, at the southern tip of Cape May County, New Jersey. The canal was constructed by the United States Army Corps of Engineers during World War II to provide a protected route to avoid German...

, Cape Island Creek and Cape May Harbor which cut it off from the rest of the Cape May Peninsula.

Before the canal was built Cape Island referred to the site of the City of Cape May, southeast of Cape Island Creek, a tidal "creek" and marsh that has been partly filled in at its southern end.