The Florida Keys are an archipelago of islands that stretch over 180 miles from the southern coast of Florida out into the Atlantic Ocean and the Gulf of Mexico. When people ask how many keys are in Florida Keys, they are often surprised to learn that the term refers to a specific chain of islands, rather than every small cay or island in the region.
Defining the Florida Keys
To understand the number of keys, one must first define what constitutes a "key." In geographical terms, a key is a small island, particularly one found in a low-lying area. The Florida Keys are a coral cay archipelago, which means they are built from coral rock and sand piled up on top of ancient coral reefs. The chain begins at the southeastern coast of Florida and extends westward, eventually connecting to the mainland near Key Largo.
The Primary Seven
When discussing the core geography, the most common answer to the question of how many keys are in Florida Keys is seven. These are the major islands that are generally recognized as the primary chain. Listed from north to south, they include Key Largo, Long Key, Key Biscayne, Key West, and the cluster of the Lower Keys.
Key Largo
Long Key
Key Biscayne
Key West
The Lower Keys
The Numbered Mystery
If the question is about the specific numbered routes, the answer is different. The Overseas Highway, which is the road that connects the islands, is designated as U.S. Route 1. This highway crosses numerous bridges, leading many travelers to wonder if each bridge represents a new key. While the highway traverses a complex system of islands and channels, the distinct landmasses officially named as keys is much smaller than the number of bridges one drives over.
Key Name | Notable Feature
Key Largo | Longest key; famous for diving
Key Vaca | Contains the city of Marathon
Key West | Southernmost point; historic port
The confusion often arises because maps show a multitude of small islands and islets. However, many of these are unlabeled cays or rocks that are only visible at low tide. The true "keys" are the significant pieces of land large enough to support vegetation and permanent structures, which brings the total to a specific, manageable number far lower than most people assume.
Geographical Variations
It is important to distinguish between the "Florida Keys" as a geographic region and the administrative boundaries. The Florida Keys National Marine Sanctuary covers a vast area and includes hundreds of small islands and reefs. However, when a local or a visitor asks how many keys are in the Florida Keys, they are usually referring to the inhabited or named landmasses along the main highway corridor.
The geography is dynamic, shaped by hurricanes and sea levels, which means the exact number can fluctuate slightly over time. Some keys have merged through sediment deposition, while others have been eroded away. Despite these changes, the cultural and historical identity of the region remains firmly rooted in the chain of islands that have made the area famous for its unique ecosystem and lifestyle.
