THE PORTSMOUTH LAND BRIEF
Land in the
Narragansett/Bristol Lowland setting.
Portsmouth town has 23 square miles of land in Newport County. Its Census reference point is in Narragansett/Bristol Lowland, within Northeastern Coastal Zone.
Irregular plains and low hills form a coastal transition with glacial lakes and oak-pine woodland. This northeastern landscape is gentler than the mountainous country farther inland.
Regional context: Northeastern Coastal Zone ↗ · Classification at the Census reference point
Portsmouth and Newport County
Portsmouth is associated with Newport 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 36.3 square miles of water within Portsmouth, or 61.2% of its total area. It is 6.1 percentage points lower than the 67.3% recorded for Newport County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Portsmouth town has 11 times the land area of nearby Melville CDP (2.1 square miles). These areas describe boundaries, not comparable property prices.

