Article · Wikipedia archive · Last revised Jul 3, 2026

Fat Deer Key

Fat Deer Key is an island in the middle Florida Keys.

Last revised
Jul 3, 2026
Read time
≈ 1 min
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Fat Deer Key
Mangrove Beach in Fat Deer Key
Fat Deer Key
Fat Deer Key
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Fat Deer Key
Fat Deer Key (Caribbean)
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Geography
LocationGulf of Mexico
Coordinates24°44′20″N 81°00′07″W / 24.73889°N 81.00194°W / 24.73889; -81.00194
ArchipelagoFlorida Keys
Adjacent toFlorida Straits
Administration
StateFlorida
CountyMonroe

Fat Deer Key is an island1 in the middle Florida Keys.2

U.S. 1 (or the Overseas Highway) crosses the key near mile markers 53.5-56, between Long Point Key and Key Vaca.

It is entirely within the cities of Marathon, Florida and Key Colony Beach, Florida.

It has the only road leading to the city of Key Colony Beach, known as Sadowski Causeway.

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