
Key Largo () is an island in the upper
Florida Keys
The Florida Keys are a coral island, coral cay archipelago off the southern coast of Florida, forming the southernmost part of the continental United States. They begin at the southeastern coast of the Florida peninsula, about south of Miami a ...
archipelago and is the largest section of the keys, at 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 (the
Overseas Highway
The Overseas Highway is a highway carrying U.S. Route 1 (US 1) through the Florida Keys to Key West. Large parts of it were built on the former right-of-way of the Overseas Railroad, the Key West Extension of the Florida East Coast Ra ...
). Three
census-designated place
A census-designated place (CDP) is a Place (United States Census Bureau), concentration of population defined by the United States Census Bureau for statistical purposes only.
CDPs have been used in each decennial census since 1980 as the counte ...
s (CDPs) are on the island of Key Largo:
North Key Largo (near the
Card Sound Bridge),
Key Largo (roughly from the island's southernmost point) and
Tavernier (at the island's south end). As of 2010, these three CDPs have a combined population of 13,850. None of Key Largo is an
incorporated municipality
Municipal corporation is the legal term for a local governing body, including (but not necessarily limited to) cities, counties, towns, townships, charter townships, villages, and boroughs. The term can also be used to describe municipally owned c ...
; it is governed, at the local level, by
Monroe County.
Key Largo is connected to the mainland of
Miami-Dade County
Miami-Dade County () is a county located in the southeastern part of the U.S. state of Florida. The county had a population of 2,701,767 as of the 2020 census, making it the most populous county in Florida and the seventh-most-populous coun ...
by two routes, the first being the
Overseas Highway
The Overseas Highway is a highway carrying U.S. Route 1 (US 1) through the Florida Keys to Key West. Large parts of it were built on the former right-of-way of the Overseas Railroad, the Key West Extension of the Florida East Coast Ra ...
—the southernmost portion of
U.S. Highway 1—which enters Key Largo at Jewfish Creek (near the middle of the island) before turning southwest. The second route is via Card Sound Road, which connects to the northern end of Key Largo and runs southeastward, connecting with
County Road 905, which runs southwest and joins U.S. 1 at about
mile marker
A milestone is a numbered marker placed on a route such as a road, railway, railway line, canal or border, boundary. They can indicate the distance to towns, cities, and other places or landmarks like Mileage sign, mileage signs; or they c ...
106. These routes originate at
Florida City
Florida City is a city in Miami-Dade County, Florida, United States. It is the southernmost municipality in the South Florida metropolitan area. Florida City is primarily a Miami suburb and a major agricultural area. As of the 2020 census, it ...
on the mainland.
Key Largo is a popular destination for many. It has been dubbed the "Diving Capital of the World" as the living
coral reefs
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
...
, a few miles offshore, attract thousands of
scuba divers
Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. The word ''scuba'' is an acronym for ...
,
sport-fishing enthusiasts and scientific researchers each year.
Key Largo's proximity to the
Everglades
The Everglades is a natural region of flooded grasslands in the southern portion of the U.S. state of Florida, comprising the southern half of a large drainage basin within the Neotropical realm. The system begins near Orlando with the K ...
also makes it an ideal starting point for scientists,
kayak
]
A kayak is a small, narrow human-powered watercraft typically propelled by means of a long, double-bladed paddle. The word ''kayak'' originates from the Inuktitut word '' qajaq'' (). In British English, the kayak is also considered to be ...
ers and
ecotourism, ecotourists, among others. Automotive and highway pioneer (and
Miami Beach
Miami Beach is a coastal resort city in Miami-Dade County, Florida, United States. It is part of the Miami metropolitan area of South Florida. The municipality is located on natural and human-made barrier islands between the Atlantic Ocean an ...
developer)
Carl G. Fisher built the
Caribbean Club in
1938
Events
January
* January 1 – state-owned enterprise, State-owned railway networks are created by merger, in France (SNCF) and the Netherlands (Nederlandse Spoorwegen – NS).
* January 20 – King Farouk of Egypt marries Saf ...
as his last project.
Key Largo is situated between
Everglades National Park
Everglades National Park is a List of national parks of the United States, national park of the United States that protects the southern twenty percent of the original Everglades in Florida. The park is the largest tropical wilderness in the Un ...
, to the northwest, and
John Pennekamp Coral Reef State Park
John Pennekamp Coral Reef State Park is a Florida State Park located on Key Largo in Florida. It includes around of adjacent Atlantic Ocean waters. The park is roughly long and extends into the Atlantic Ocean along the prominent Hawk Cha ...
, to the east, the first
underwater park in the United States. The latter state park protects part of the
Florida Reef, the only living coral
barrier reef
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.
C ...
in the continental United States. Barrier reefs are critical to coastal communities and environments as they are able to dissipate up to 97%
of the oceanic wave forces exerted during
hurricanes
A tropical cyclone is a rapidly rotating storm system with a low-pressure area, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depending on its locat ...
and other tropical storms, with the reef serving as a protective buffer against flooding further inland. The barrier reef, itself, provides over $675 million in
storm surge
A storm surge, storm flood, tidal surge, or storm tide is a coastal flood or tsunami-like phenomenon of rising water commonly associated with low-pressure weather systems, such as cyclones. It is measured as the rise in water level above the ...
protection, annually.
History
When Europeans first arrived in the Florida Keys in the 16th century, the area was uninhabited or only sparsely inhabited by indigenous peoples such as the
Calusa
The Calusa ( , Calusa: *ka(ra)luś(i)) were a Native American people of Florida's southwest coast. Calusa society developed from that of archaic peoples of the Everglades region. Previous Indigenous cultures had lived in the area for thousands o ...
and the
Tequesta
The Tequesta, also Tekesta, Tegesta, Chequesta, Vizcaynos, were a Native American tribe on the Southeastern Atlantic coast of Florida. They had infrequent contact with Europeans and had largely migrated by the middle of the 18th century.
Loca ...
. The earliest description of the area and its inhabitants was by
Hernando de Escalante Fontaneda
Hernando de Escalante Fontaneda ( – after 1575, dates uncertain) was a Spanish shipwreck survivor who lived among the Native Americans of Florida for 17 years. His ''circa'' 1575 memoir, ''Memoria de las cosas y costa y indios de la Florida'', ...
, a survivor of a shipwreck who lived among the Calusa people from 1549 to 1566. The earliest reference to Key Largo is found on a map prepared in 1639 by Dutch cartographer
Johannes Vingboons, in which it is named ''Caio des 12 Leguas'' (islet of twelve
leagues). Some time later, it was named ''Cayo Largo'' — meaning long islet — by Spanish explorers.
In 1770, Dutch surveyor
Bernard Romans Bernard Romans ( 1720–1784) was a Dutch-born navigator, surveyor, cartographer, naturalist, engineer, soldier, promoter, and writer who worked in the British American colonies and the United States. His best known work, ''A Concise Natural History ...
reported that the area was uninhabited, although evidence was found that indigenous people visited the area from time to time. By the end of the
Third Seminole War
The Seminole Wars (also known as the Florida Wars) were a series of three military conflicts between the United States and the Seminoles that took place in Florida between about 1816 and 1858. The Seminoles are a Native American nation which co ...
in 1858, the area was under control by the United States government, though it remained largely uninhabited. In 1870, a post office was established at "Cayo Largo" (in the current Rock Harbor area). It closed and another was opened called "Largo" in 1881. Additional post offices opened in Planter in 1891 and Aiken in 1895.
The island gained fame as the setting for the 1948 film ''
Key Largo'', but apart from background filming used for establishing shots, the film was shot on a
Warner Bros.
Warner Bros. Entertainment Inc. (WBEI), commonly known as Warner Bros. (WB), is an American filmed entertainment studio headquartered at the Warner Bros. Studios complex in Burbank, California and the main namesake subsidiary of Warner Bro ...
sound stage in Hollywood. After the film's success, pressure from local businesses resulted in a change in the name of the post office serving the northern part of the island, from "Rock Harbor" to "Key Largo", on June 1, 1952. After that, every resident north of
Tavernier had a Key Largo address and the postmark read "Key Largo".
Geology and geography
The island of Key Largo is an exposed, fossilized remnant of a coral reef formed during a period of higher sea level and then uncovered and eroded during a subsequent
ice age
An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and g ...
. The highest elevation is a slight ridge forming the spine of the island, which rises to about .
The island's
substrate
Substrate may refer to:
Physical layers
*Substrate (biology), the natural environment in which an organism lives, or the surface or medium on which an organism grows or is attached
** Substrate (aquatic environment), the earthy material that exi ...
is called
Key Largo Limestone
The Key Largo Limestone is a Formation (stratigraphy), geologic formation in Florida. It is a fossilized coral reef. The formation is exposed along the upper and middle Florida Keys from Soldier Key (at the north end of the Florida Keys) to the ...
; in many places,
fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ...
ized corals are visible at the surface.
Solution holes, which are pockets dissolved in the limestone by acidic rainwater, form shallow depressions in the land. The natural shoreline of the island is generally rocky. A slippery, gray, limestone-based clay called "
marl
Marl is an earthy material rich in carbonate minerals, Clay minerals, clays, and silt. When Lithification, hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae.
M ...
" is the shoreline and near-shore soil. No natural sand beaches occur on the island. Inland, decomposed vegetation forms a rich, acidic humus soil up to about 6 in (15 cm) thick, topped by "
leaf litter
Plant litter (also leaf litter, tree litter, soil litter, litterfall, or duff) is dead plant material (such as leaves, bark, needles, twigs, and cladodes) that has fallen to the ground. This detritus or dead organic material and its constituen ...
". The soil supports a diverse flora of herbaceous plants, woody shrubs, and hardwood trees.
Climate
Key Largo has a
tropical savanna climate
Tropical savanna climate or tropical wet and dry climate is a tropical climate sub-type that corresponds to the Köppen climate classification categories ''Aw'' (for a dry "winter") and ''As'' (for a dry "summer"). The driest month has less than ...
(
Aw). Frost has never been recorded on the island. Key Largo enjoys close to 3,000 hours of sunshine annually.
References
Further reading
*
External links
*
Official Tourism Site
{{authority control
Islands of Monroe County, Florida
Islands of the Florida Keys
Islands of Florida