Key Largo, Florida

Key Largo, Florida
Location in Monroe County and the state of Florida
U.S. Census Bureau map showing CDP boundaries
Coordinates: 25°6′24″N 80°25′48″W / 25.10667°N 80.43000°W / 25.10667; -80.43000
Country United States
State Florida
County Monroe
Area
  Total
15.25 sq mi (39.49 km2)
  Land12.05 sq mi (31.21 km2)
  Water3.19 sq mi (8.27 km2)
Elevation
7 ft (2 m)
Population
 (2020)
  Total
12,447
  Density1,032.86/sq mi (398.79/km2)
Time zoneUTC-5 (Eastern (EST))
  Summer (DST)UTC-4 (EDT)
ZIP code
33037
Area code305
FIPS code12-36375
GNIS feature ID0294458

Key Largo is an unincorporated area and census-designated place in Monroe County, Florida, United States, located on the island of Key Largo in the upper Florida Keys. The population was 12,447 at the 2020 census, up from 10,433 in 2010. The name comes from the Spanish Cayo Largo, or "long key". It is both the first island and town of the Florida Keys to be reached from the Overseas Highway to Key West. It was also the location of one of the stations of the Overseas Railroad.