THE PORTSMOUTH LAND BRIEF
Land in the
Knobs-Lower Scioto Dissected Plateau setting.
Portsmouth city has 10.7 square miles of land in Scioto County. Its Census reference point is in Knobs-Lower Scioto Dissected Plateau, within Western Allegheny Plateau.
Rounded wooded hills and intervening valleys form an unglaciated plateau landscape. Valley floors contain much of the region's open land, contrasting with its more forested slopes.
Regional context: Western Allegheny Plateau ↗ · Classification at the Census reference point
Portsmouth and Scioto County
Portsmouth is associated with Scioto County in the Census boundary data. Start with the parcel’s tax bill to match the property to that jurisdiction, then confirm which government handles its land use.
Portsmouth by land and water
The Census records 0.35 square miles of water within Portsmouth, or 3.2% of its total area. It is 2.1 percentage points higher than the 1% recorded for Scioto County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Portsmouth city has 9.6 times the land area of nearby New Boston village (1.12 square miles). These areas describe boundaries, not comparable property prices.

