The Marquesas Keys form an uninhabited island group about 20 miles west of Key West, four miles in diameter, and largely covered by mangrove forest. They are an unincorporated area of Monroe County, Florida and belong to the Lower Keys Census County Division. They are protected as part of the Key West National Wildlife Refuge. The Marquesas were used for target practice by the military as recently as 1980.
The total area, including the lagoon, measures 29.37 km2. The land area, according to the United States Census Bureau, is 6.58 km2, the water area 0.17 km2, giving a combined area of 6.75 km2, not counting water areas with connection to the open sea, but including small landlocked lakes on the Keys. The group is located at coordinates 24°34′19″N 82°07′10″W.
Wikipedia https://en.wikipedia.org/wiki/Marquesas_Keys
Coordinates 24°34'53.583" N -82°6'55.145" E
