Cass county is located in the southeastern section of the state on the banks of the Red River of the North. Fargo serves as the county seat. The county population on July 1, 1999, was 118,405, an increase of 15,531 over the 1990 census.
Situated in the Valley region of North Dakota, the county is devoid of lakes. There are, however, a few rivers including the Rush, the Maple and the Sheyenne River.
The Maple Creek Crossing State Historic Site is located southwest of Fargo and makes for an interesting and educational day trip.