Knight's Key is an island in the middle Florida Keys

Florida Keys

The Florida Keys are a coral archipelago in southeast United States. They begin at the southeastern tip of the Florida peninsula, about south of Miami, and extend in a gentle arc south-southwest and then westward to Key West, the westernmost of the inhabited islands, and on to the uninhabited Dry...

, located entirely within the borders of the city of Marathon, Florida

Marathon, Florida

Marathon is a city on Knight's Key, Boot Key, Key Vaca, Fat Deer Key, Long Point Key, Crawl Key and Grassy Key islands in the middle Florida Keys, in Monroe County, Florida, in the United States. As of the 2000 census, the city had a total population of 10,255. As of 2005, the population estimated...

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Geography

U.S. 1

U.S. Route 1 in Florida

U.S. Route 1 in Florida runs along the state's east coast from Key West to its crossing of the St. Marys River into Georgia north of Boulogne, and south of Folkston. US 1 was designated through Florida when the U.S. Highway System was established in 1926.US 1 runs in the state of Florida, and...

 (or the Overseas Highway

Overseas Highway

The Overseas Highway is a highway carrying U.S. Route 1 through the Florida Keys. Large parts of it were built on the former right-of-way of the Overseas Railroad, the Key West Extension of the Florida East Coast Railway. Completed in 1912, the Overseas Railroad was heavily damaged and partially...

) crosses the key at approximately mile marker 47, at the western end of Key Vaca

Key Vaca

Key Vaca is an island in the middle Florida Keys, located entirely within the borders of the city of Marathon, Florida. It is often incorrectly identified as "Marathon Key."- Geography :Key Vaca is located between Fat Deer Key and Knight's Key...

 and eastern end of the Seven Mile Bridge

Seven Mile Bridge

The Seven Mile Bridge is a famous bridge in the Florida Keys, in Monroe County, Florida, United States. It connects Knight's Key in the Middle Keys to Little Duck Key in the Lower Keys...

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History

Prior to the completion of the Key West extension of the Overseas Railroad

Overseas Railroad

The Overseas Railroad was an extension of the Florida East Coast Railway to Key West, a city of almost 30,000 inhabitants located 128 miles beyond the end of the Florida peninsula...

, Knight's Key was the end of the line and a major seaport existed there. A U.S. Post Office was established there in 1908, and operated until June, 1912. A U.S. Coast & Geodetic Survey field report written in 1935-36 states: "The key was named after the original settler and is called locally Knights Key."