Plantation Key is an island in the Upper Florida Keys, is located at 24°58′33″N 80°33′08″W. It is separated from Key Largo by Tavernier Creek (Mile Marker 91.0) at its Northeast end, and from Windley Key by Snake Creek (Mile Marker 85.5) at its Southwest end.
This island is within the Village of Islamorada as of November 4, 1997, when it was incorporated.