Park Key

Park Key is an uninhabited island in the lower Florida Keys about 14 miles (23 km) east of Key West. It is 1500 meters long, and between 75 and 260 meters wide (190 meters on the average). It measures 70 acres (28 hectares) in area.

Park Key

Tiny uninhabited Park Key acts as a natural causeway for US-1
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Geography
Location	Gulf of Mexico
Coordinates	24.653°N 81.549°W / 24.653; -81.549
Archipelago	Florida Keys
Adjacent to	Florida Straits
Administration
United States
State	Florida
County	Monroe

The island was made from fill, so that the railroad and later the road bed could be laid down.^{[citation needed]} It is a habitat for Linum arenicola.^[1]

U.S. 1 (or the Overseas Highway) crosses Park Key at about mile marker 18, between Lower Sugarloaf Key and Sugarloaf Key in the middle of Upper Sugarloaf Sound. It serves only as a causeway and is uninhabited.