THE PORTLAND LAND BRIEF
Land in the
Western Pennyroyal Karst Plain setting.
Portland city has 15.1 square miles of land in Robertson County, Sumner County. Its Census reference point is in Western Pennyroyal Karst Plain, within Interior Plateau.
Open hills, irregular plains and tablelands are developed on limestone and other sedimentary rocks. Oak-hickory woodland, local prairie and cedar-glade settings contribute to this diverse inland plateau.
Regional context: Interior Plateau ↗ · Classification at the Census reference point
One place name. 2 county geographies.
Portland intersects 2 county geographies: Robertson County, Sumner County. A Portland mailing address alone cannot choose the right record office; use the county and parcel identifier on the tax bill or deed.
Portland by land and water
The Census records 0.02 square miles of water within Portland, or 0.1% of its total area. It is 2 percentage points lower than the 2.1% recorded for Tennessee. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Portland city has 28.2 times the land area of nearby Mitchellville city (0.54 square miles). These areas describe boundaries, not comparable property prices.

