The Marquesas Keys form an uninhabited island group about west of
Key West
Key West ( es, Cayo Hueso) is an island in the Straits of Florida, within the U.S. state of Florida. Together with all or parts of the separate islands of Dredgers Key, Fleming Key, Sunset Key, and the northern part of Stock Island, it con ...
, in diameter, and largely covered by
mangrove forest. They are an
unincorporated area
An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world either have ...
of
Monroe County, Florida
Monroe County is a county in the state of Florida. As of the 2020 census, the population was 82,874. Its county seat is Key West. Monroe County includes the islands of the Florida Keys and comprises the Key West Micropolitan Statistical Area ...
and belong to the Lower Keys
Census County Division. They are protected as part of the
Key West National Wildlife Refuge
The Key West National Wildlife Refuge is a 189,497 acre (766.867 km2) National Wildlife Refuge located in Monroe County, Florida, between Key West, Florida and the Dry Tortugas . Only 2,019 acres (8.171 km2) of land are above sea lev ...
. The Marquesas were used for target practice by the military as recently as 1980.

The total area, including the
lagoon
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into '' coastal lagoons'' (or ''barrier lagoons' ...
, measures . The land area, according to the
United States Census Bureau
The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy
An economy is an area of th ...
, is (exactly 6,579,703 m
2), the water area (165,744 m
2), giving a combined area of (6,745,447 m
2), not counting water areas with connection to the open sea, but including small landlocked lakes on the Keys. The group is located at coordinates .
The islands are part of the
Florida Keys
The Florida Keys are a coral island, coral cay archipelago located off the southern coast of Florida, forming the southernmost part of the continental United States. They begin at the southeastern coast of the Florida peninsula, about south of ...
, separated from the rest of the Florida Keys, which are farther east, by the Boca Grande Channel, which is wide until Boca Grande Key, the westernmost of the
Mule Keys. Only the
Dry Tortugas
Dry Tortugas National Park is a national park located about west of Key West in the Gulf of Mexico. The park preserves Fort Jefferson and the seven Dry Tortugas islands, the westernmost and most isolated of the Florida Keys. The archipelago's ...
are farther west, west of the Marquesas Keys.
The central
lagoon
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into '' coastal lagoons'' (or ''barrier lagoons' ...
is called Mooney Harbor. The northernmost key is the largest and has a strip of sandy beach free of mangrove. In the past it was known as "Entrance Key". It surrounds the lagoon in the north and east. Adjoining in the south are smaller keys such as Gull Keys, Mooney Harbor Key, and finally about four unnamed keys in the southwest corner of the group. Older charts show that two of these keys once were named "Button Island" and "Round Island".
west of the Marquesas Keys is
Rebecca Shoal.
The islands are best known for their excellent
sport fishing.
See also
*
Key West National Wildlife Refuge
The Key West National Wildlife Refuge is a 189,497 acre (766.867 km2) National Wildlife Refuge located in Monroe County, Florida, between Key West, Florida and the Dry Tortugas . Only 2,019 acres (8.171 km2) of land are above sea lev ...
*
Pseudo-atoll
References
External links
Key Names: A Gazeteer of the Islands of the Florida Keys
{{authority control
Uninhabited islands of Monroe County, Florida
Lagoons of Florida
Beaches of Monroe County, Florida
Islands of the Florida Keys
Beaches of Florida
Islands of Florida