Florida's Swamp Coverage: ~5% (2 Million Acres) by Census Definition

According to U.S. Census Bureau land-cover classifications, approximately 2 million acres (809,000 hectares) of Florida—just under 5% of the state's total land area—are designated as "swamp."

What "Swamp" Means Here

The Census defines swamp as forested wetlands—woody vegetation dominated, saturated soils. This excludes:

• Marshes (herbaceous wetlands: Everglades sawgrass, freshwater marshes)
• Bogs/fens (peat-accumulating, rare in FL)
• Mangroves (coastal, salt-tolerant — classified separately)
• Bottomland hardwoods on occasionally flooded riverplains (sometimes separate class)

Where Florida's Swamps Are

• Big Cypress Swamp (729K acres) — adjacent to Everglades, cypress strands
• Green Swamp (560K acres) — Central FL, hydrologic heart, four rivers originate
• Corkscrew Swamp (13K acres, Audubon) — old-growth bald cypress, ghost orchid
• Okefenokee fringe (mostly GA, but FL portion)
• Riverine swamps: Apalachicola, Suwannee, St. Johns, Peace River floodplains

The Bigger Wetland Picture

If you include all wetlands (marshes, mangroves, swamps, wet prairies), Florida has ~11 million acres (~27% of land) — the most of any state except Alaska. The Everglades alone: 1.5M acres (marsh, not swamp).

Why It Matters

• Water filtration, flood attenuation, aquifer recharge (Floridan Aquifer)
• Carbon storage (peat/organic soils)
• Habitat: Florida panther, black bear, wood stork, limpkin, countless herps
• Threats: Drainage (canals), development, invasive species (melaleuca, Old World climbing fern), climate change (saltwater intrusion)

5% "swamp" sounds small. But in Florida, water defines everything—and swamps are the forested kidneys of the peninsula.