THE UNION COUNTY LAND BRIEF
Land in the
Sea Island Flatwoods setting.
Union County has 243.9 square miles of land in Florida. 3 mapped landscape regions meet across Union County: Sea Island Flatwoods, Okefenokee Plains, Tallahasee Hills/Valdosta Limesink.
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 ↗ · Regional mapping across the county footprint
Where the landscape changes
Union County intersects 3 mapped regional units. The largest mapped shares are:
- Sea Island Flatwoods76.9%
- Okefenokee Plains18.7%
- Tallahasee Hills/Valdosta Limesink4.4%
Southeastern Plains in Union County
Irregular plains of sand, silt and clay support a mix of pine and hardwood landscapes. The region has more relief than the lower coastal plain, with generally gentle stream gradients.
Read the regional source ↗Finding your parcel within Union County
The atlas lists 3 cities, towns, townships, and Census communities associated with Union County, including Lake Butler, Worthington Springs, Raiford. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Union County by land and water
The Census records 5.86 square miles of water within Union County, or 2.3% of its total area. That share is close to Union County’s 2.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Union County has 102.3 times the land area of nearby Lake Butler city (2.39 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Alachua County, Baker County, Bradford County, Columbia County within Florida. A tract near one of these lines should be matched to the county identifier on its own records.

