Duck Key is an island in Monroe County, Florida, United States, in the middle Florida Keys. It is part of the Duck Key, Florida census-designated place. The CDP also includes the neighboring island of Conch Key.
The key was the site of a salt manufacturing operation in the 1820s & 1830s. Occupation of the island ceased after the Labor Day Hurricane of 1935 and did not resume until the key was connected to the highway by a causeway in 1953. J.W. Norie, in his Piloting Directions for the Gulf of Florida, The Bahama Bank & Islands (1828) states: "Duck Key - Some two miles (3 km) long, low, rocky, & covered with mangroves; some small patches of good land with a little timber. This island formerly saltworks but they were transferred latterly to Key West, owned by Mr. Howe, who is also possessor of this Key." Hawk's Cay Resort is currently located here, and the island is sometimes known by that name. Noted Michigan Senate leader, Emil Lockwood, retired in Duck Key, where he served in many civic and political capacities until his death in 2002.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- Florida Keys Gazetteer Archived May 17, 2008, at the Wayback Machine.
- MAN IN MOTION: Michigan's Legendary Senate Majority Leader, Emil Lockwood by Stanley C. and Marilyn H. Fedewa (Llumina/MSU Press, 2003)
- "An Information Guide to Duck Key in the Florida Keys (Archives)". Duckkeyonline.com. Retrieved 7 October 2013.