Monroe County lies at the southern tip of the U.S. state of Florida and is best known for encompassing the majority of the Florida Keys along with a mainland portion that overlaps the Everglades. The county was established on July 3, 1823. Its historic and administrative center is the city of Key West, which serves as the county seat. As a largely maritime county, a substantial portion of Monroe's total area is water.
Geography and communities
Monroe County stretches from the upper Keys near Key Largo down through Islamorada, Marathon, Big Pine Key and the lower Keys to Key West and beyond to the Dry Tortugas. The county contains dozens of islands and keys of varying size, many connected by the Overseas Highway. Major communities include Key West, Key Largo, Marathon, Islamorada and Big Pine Key.
History and development
The region has a layered history that includes Native American habitation, Spanish exploration, maritime trade and later American settlement. Key West developed as a 19th-century port and maritime center, with industries such as shipwreck salvaging and later tourism shaping its growth. Monroe's identity has long been tied to its island geography and strategic coastal location.
Economy, tourism and culture
Tourism is the primary economic driver: visitors are drawn to beaches, fishing, boating, diving on coral reefs and cultural attractions in Key West. Local economies also depend on commercial and recreational fishing, marine services, and hospitality. The county hosts festivals, historical sites and a lively arts scene centered in Key West.
Environment and conservation
Monroe County contains fragile coastal ecosystems such as coral reefs, mangroves and seagrass beds, and it borders federally protected areas of the Everglades and the Dry Tortugas National Park. Conservation and climate resilience — including sea level rise and hurricane preparedness — are important policy concerns. The county is home to notable species such as the endangered Florida Keys deer on Big Pine Key.
Government and resources
Monroe County government administers services across dispersed island communities and coordinates with state and federal agencies on land use, environmental protection and emergency response. For official information and services see the county's web resources and visitor guides: Monroe County official site, general Florida state resources: Florida state, and state overview pages: Florida overview. Local municipal and tourism pages include Key West civic information: Key West and regional visitor resources: Florida Keys visitor information.
- Founded: July 3, 1823
- County seat: Key West
- Notable features: Overseas Highway, coral reefs, Dry Tortugas