THE FLEMING ISLAND LAND BRIEF
Land in the
Sea Island Flatwoods setting.
Fleming Island CDP has 15.8 square miles of land in Clay County. Its Census reference point is in Sea Island Flatwoods, within Southern Coastal Plain.
Low plains mingle with barrier islands, lagoons, marshes and inland lake districts. Coastal and inland settings vary substantially within this warm southeastern landscape.
Regional context: Southern Coastal Plain ↗ · Classification at the Census reference point
Fleming Island and Clay County
Fleming Island is associated with Clay County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Fleming Island by land and water
The Census records 7.29 square miles of water within Fleming Island, or 31.5% of its total area. It is 25.5 percentage points higher than the 6.1% recorded for Clay County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Fleming Island CDP has 1.2 times the land area of nearby Lakeside CDP (13.5 square miles). These areas describe boundaries, not comparable property prices.

