Key Colony Beach is located in the Heart of the Florida Keys.  Key Colony Beach is reached over the Sadowski Causeway, which connects Key Colony Beach to Marathon, on the east side of the city. It lies directly south of the City of Marathon.  Most residences are on canals with quick access to the Gulf or Atlantic Ocean or have ocean views which make the city ideal for fishing and boating activities.

The entire ocean-facing side of West Ocean Drive is lined by various condominium complexes, while the side facing Marathon houses the Key Colony Inn and a 9 hole, par-3 golf course.

Close to Marathon Airport, fly in sail out!