THE SUMTER COUNTY LAND BRIEF
Land in the
Atlantic Southern Loam Plains setting.
Sumter County has 665.1 square miles of land in South Carolina. 5 mapped landscape regions meet across Sumter County: Atlantic Southern Loam Plains, Southeastern Floodplains and Low Terraces, Carolina Flatwoods, among others.
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.
Regional context: Southeastern Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Sumter County intersects 5 mapped regional units. The largest mapped shares are:
- Atlantic Southern Loam Plains63.1%
- Southeastern Floodplains and Low Terraces16.1%
- Carolina Flatwoods12.8%
- Sand Hills7%
- Mid-Atlantic Floodplains and Low Terraces1.1%
Middle Atlantic Coastal Plain in Sumter County
Low coastal plains contain terraces, estuaries, marshes and barrier islands. Unconsolidated sediments underlie this varied coastal setting, with forest patterns changing near streams and low-lying areas.
Read the regional source ↗Finding your parcel within Sumter County
The atlas lists 17 cities, towns, townships, and Census communities associated with Sumter County, including Sumter, Shiloh, Wedgefield. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Sumter County by land and water
The Census records 17 square miles of water within Sumter County, or 2.5% of its total area. That share is close to Sumter County’s 2.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Sumter County has 20 times the land area of nearby Sumter city (33.2 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Calhoun County, Clarendon County, Florence County, Kershaw County, Lee County, Richland County within South Carolina. A tract near one of these lines should be matched to the county identifier on its own records.

