THE UNION COUNTY LAND BRIEF
Land in the
Southern Outer Piedmont setting.
Union County has 513.6 square miles of land in South Carolina. The mapped landscape region in Union County is Southern Outer Piedmont.
The Piedmont is a belt of irregular plains and hills between the Appalachians and the coastal plain. A complex mixture of older rocks underlies its pine and hardwood woodland landscapes.
Regional context: Piedmont ↗ · Regional mapping across the county footprint
Finding your parcel within Union County
The atlas lists 6 cities, towns, townships, and Census communities associated with Union County, including Union, Monarch Mill, Buffalo. 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 1.73 square miles of water within Union County, or 0.3% of its total area. That share is close to Union County’s 0.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Union County has 63.3 times the land area of nearby Union city (8.11 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Cherokee County, Chester County, Fairfield County, Laurens County, Newberry County, Spartanburg County, York County within South Carolina. A tract near one of these lines should be matched to the county identifier on its own records.

