THE DORCHESTER COUNTY LAND BRIEF
Land in the
Carolina Flatwoods setting.
Dorchester County has 568.4 square miles of land in South Carolina. 3 mapped landscape regions meet across Dorchester County: Carolina Flatwoods, Mid-Atlantic Floodplains and Low Terraces, Sea Islands/Coastal Marsh.
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.
Regional context: Middle Atlantic Coastal Plain ↗ · Regional mapping across the county footprint
Where the landscape changes
Dorchester County intersects 3 mapped regional units. The largest mapped shares are:
- Carolina Flatwoods86.7%
- Mid-Atlantic Floodplains and Low Terraces12.6%
- Sea Islands/Coastal Marsh0.7%
Southern Coastal Plain in Dorchester County
Low plains mingle with barrier islands, lagoons, marshes and inland lake districts. Coastal and inland settings vary substantially within this warm southeastern landscape.
Read the regional source ↗Finding your parcel within Dorchester County
The atlas lists 8 cities, towns, townships, and Census communities associated with Dorchester County, including North Charleston, Summerville, Ridgeville. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Dorchester County by land and water
The Census records 2.62 square miles of water within Dorchester County, or 0.5% of its total area. That share is close to Dorchester County’s 0.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Dorchester County has 186.4 times the land area of nearby Ridgeville town (3.05 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Berkeley County, Charleston County, Colleton County, Orangeburg County within South Carolina. A tract near one of these lines should be matched to the county identifier on its own records.

