where is key Largo located
Sunset, Key Largo. Key Largo is an island in the upper Florida Keys archipelago and is the largest section of the Keys, at 33 miles (53 km) long.It is also the northernmost of the Florida Keys in Monroe County, and the northernmost of the Keys connected by U.S. Highway 1 (the Overseas Highway).ey Largo is a popular tourist destination and calls itself the Diving Capital of the World because the living coral reef a few miles offshore attracts thousands of scuba divers and sport-fishing enthusiasts. In 1896, a post office opened on Key Largo called Aiken, located near Sound Point.