THE CASS COUNTY LAND BRIEF
Land in the
Glacial Lake Agassiz Basin setting.
Cass County has 1,764.9 square miles of land in North Dakota. 3 mapped landscape regions meet across Cass County: Glacial Lake Agassiz Basin, Drift Plains, Beach Ridges and Sand Deltas.
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 ↗ · Regional mapping across the county footprint
Where the landscape changes
Cass County intersects 3 mapped regional units. The largest mapped shares are:
- Glacial Lake Agassiz Basin68.4%
- Drift Plains26.1%
- Beach Ridges and Sand Deltas5.5%
Northern Glaciated Plains in Cass County
Flat to gently rolling glacial terrain supports a prairie transition between taller and shorter grasses. Many temporary and seasonal wetlands occupy depressions left in the glacial landscape.
Read the regional source ↗Finding your parcel within Cass County
The atlas lists 80 cities, towns, townships, and Census communities associated with Cass County, including Fargo, Rush River, Gunkel. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Cass County by land and water
The Census records 2.88 square miles of water within Cass County, or 0.2% of its total area. That share is close to Cass County’s 0.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Cass County has 52.2 times the land area of nearby Casselton township (33.8 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Barnes County, Ransom County, Richland County, Steele County, Traill County within North Dakota. A tract near one of these lines should be matched to the county identifier on its own records.

