THE SUSSEX COUNTY LAND BRIEF
Land in the
Delmarva Uplands setting.
Sussex County has 936.1 square miles of land in Delaware. 3 mapped landscape regions meet across Sussex County: Delmarva Uplands, Virginian Barrier Islands and Coastal Marshes, Delaware River Terraces and Uplands.
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
Sussex County intersects 3 mapped regional units. The largest mapped shares are:
- Delmarva Uplands79%
- Virginian Barrier Islands and Coastal Marshes14.4%
- Delaware River Terraces and Uplands6.6%
Finding your parcel within Sussex County
The atlas lists 27 cities, towns, townships, and Census communities associated with Sussex County, including Milford, Millsboro, Seaford. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Sussex County by land and water
The Census records 260.3 square miles of water within Sussex County, or 21.8% of its total area. That share is close to Sussex County’s 21.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Sussex County has 186.4 times the land area of nearby Georgetown town (5.02 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Kent County within Delaware. A tract near one of these lines should be matched to the county identifier on its own records.