THE THIEF RIVER FALLS LAND BRIEF
Land in the
Lake Agassiz Plains setting.
Thief River Falls city has 6 square miles of land in Pennington County. Its Census reference point is in Lake Agassiz Plains, within Lake Agassiz Plain.
The former bed of glacial Lake Agassiz forms an exceptionally flat plain in the Red River valley. Thick lake sediments overlie older glacial deposits across this historic prairie landscape.
Regional context: Lake Agassiz Plain ↗ · Classification at the Census reference point
Thief River Falls and Pennington County
Thief River Falls is associated with Pennington 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.
Thief River Falls by land and water
The Census records 0.19 square miles of water within Thief River Falls, or 3% of its total area. It is 2.7 percentage points higher than the 0.3% recorded for Pennington County. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Thief River Falls city has 26.4% of the land area of nearby North township (22.7 square miles). These areas describe boundaries, not comparable property prices.

