Key Largo

Key Largo is a census-designated place in Monroe County, Florida, United States, located on the island of Key Largo in the upper Florida Keys. The population was 10,433 at the 2010 census. The name comes from the Spanish Cayo Largo, or "long key". It is the first island of the Florida Keys and the originating point of the Overseas Highway to Key West.GeographyKey Largo is located at .According to the United States Census Bureau, the CDP has a total area of 39.6 km², of which 31.5 km² is land and 8.1 km² 20.54% is water.A southeast-pointing cape on the north end of El Radabob Key, just south of Rattlesnake Key, is the east endpoint of the longest distance between any two points of land within the fifty states of the United States, as measured via Google Earth. The other endpoint is at the tip of a spit of sand on Green Island, Hawaii, 5,857.46 miles away.Key Largo is also the location of the first undersea park in the United States, established in 1963, and called the John Pennekamp Coral Reef State Park. The park is primarily offshore and stretches three miles into the Atlantic Ocean and is 25 miles long. Adjacent to this is the Florida Keys National Marine Sanctuary covering 178 square nautical miles. Both areas were designed to protect marine life, including the extensive coral reefs in the area.