Key Largo is an island in the upper Florida Keys archipelago and is the largest section of the Keys, at 33 miles long. It is one of the northernmost of the Florida Keys in Monroe County, and the northernmost of the Keys connected by U.S. Highway 1 Its earlier Spanish name was Cayo Largo, meaning long islet.
Key Largo is connected to the mainland in Miami-Dade County by two routes. The first route is The Overseas Highway, which is U.S. Highway 1 that enters Key Largo at Jewfish Creek near the middle of the island and turns southwest. The second route is Card Sound Road, which connects to the northern part of Key Largo at Card Sound Bridge and runs southeastward to connect with County Road 905, which runs southwest and joins U.S. 1 at about mile marker 106. These routes originate at Florida City on the mainland.
Key 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.
Key Largo is situated between Everglades National Park to the northwest and John Pennekamp Coral Reef State Park to the east, the first underwater park in the United States and the site of the only living coral barrier reef in the continental United States.
Maps of the Florida Keys