Conch Key is an island and unincorporated community in Monroe County, Florida, United States, located in the middle Florida Keys. U.S. 1 crosses the key at approximately mile markers 62–63, between Long and Duck Keys. It is part of the census-designated place of Duck Key.
Little Conch Key, near mile marker 62.2, is also known as Walker's Island.
Wikipedia https://en.wikipedia.org/wiki/Conch_Key,_Florida
Coordinates 24°47'25.497" N -80°53'22.249" E