Gulf of MexicoUnited States
24°34′N 82°07′W
Marquesas Keys
Part of Lower Keys
The Marquesas Keys form an uninhabited island group about 20 miles (32 km) west of Key West, four miles (6 km) 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.

Florida Keys--Public Libraries from Key West, Fla., USA / CC BY 2.0
Chart
Overview
The Marquesas Keys form an uninhabited island group about 20 miles (32 km) west of Key West, four miles (6 km) 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.
From Wikipedia, CC BY-SA 4.0
Census, cataloged
Also in the area
Inside the group's outline but not confirmed as members by any source.
- Unnamed island7 m · 7 km²
- Unnamed island6 m · 0.75 km²
- Unnamed island4 m · 0.22 km²
- Unnamed island5 m · 0.21 km²
- Unnamed island6 m · 0.19 km²
- Unnamed island0.13 km²
- Mooney Harbor Key0.12 km²
- Unnamed island6 m · 0.1 km²
- Unnamed island6 m · 0.08 km²
- Unnamed island2 m · 0.01 km²
- Unnamed island0.01 km²
- Unnamed island1 m · 0.01 km²
Figures
Comparative heights
To the same scale
Islands by area
| Unnamed island | 7 km² |
| Unnamed island | 0.75 km² |
| Unnamed island | 0.22 km² |
| Unnamed island | 0.21 km² |
| Unnamed island | 0.19 km² |
| Unnamed island | 0.13 km² |
| Mooney Harbor Key | 0.12 km² |
| Unnamed island | 0.1 km² |
| Unnamed island | 0.08 km² |
| Unnamed island | 0.01 km² |
| Unnamed island | 0.01 km² |
| Unnamed island | 0.01 km² |
| Unnamed island | 0.9 ha |
| Unnamed island | 0.6 ha |
| Unnamed island | 0.3 ha |
| Unnamed island | 0.3 ha |
| Unnamed island | 0.3 ha |
| Unnamed island | 0.2 ha |
| Unnamed island | 0.2 ha |
| Unnamed island | 0.2 ha |
| Unnamed island | 0.2 ha |
| Unnamed island | 0.2 ha |
| Unnamed island | 0.2 ha |
| Unnamed island | 0.1 ha |
| Unnamed island | 0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
| Unnamed island | <0.1 ha |
Groups within
Photographs

An aerial view of the Marquesas Key taken from the west. The enlargements of the Navy target and spotting towers are inserted beside the photo.
Florida Keys--Public Libraries from Key West, Fla., USA / CC BY 2.0

Air photo of the Marquesas Keys, Florida, in 1979. This is cropped from the original photo. The white zone in the lower left is a glare from the sun off the ocean.

Apollo 9 Hasselblad image from film magazine 22/C - Earth orbit United States, Florida Keys, Key West, Grand Boca Channel, Marquesas Keys.

Apollo 9 Hasselblad image from film magazine 22/C - Earth orbit United States, Florida Keys, Grand Boca Channel, Marquesas Keys.
Sources
Facts
Photographs
- Aerial photographs of Florida MM00007422 (5108601186). Florida Keys--Public Libraries from Key West, Fla., USA / CC BY 2.0
- Marquesas Keys 1979 1VEOR00110016. James Stuby based on USGS photo / Public domain
- AS09-22-3467 (22044697701). Project Apollo Archive / Public domain
- AS09-22-3466 (21847876629). Project Apollo Archive / Public domain