Cass County is North Dakota's most populous region, yet it remains uniquely named.

Countries & Cities · Published 15 October 2026 Swipe more like this →

In short: Home to over a quarter of North Dakota's residents, Cass County stands out as the only county in the United States not named after Lewis Cass. Instead, it honors George Washington Cass, a 19th-century railroad executive. This agricultural hub serves as the state's primary engine of growth and demographic change.

Established by the Dakota Territory legislature on January 4, 1873, and organized later that year, Cass County occupies the eastern edge of North Dakota. Its landscape is defined by low rolling hills that slope toward the north and east, eventually draining into the Red River. This river forms the county's eastern border, serving as a natural boundary with Minnesota before the water continues its journey toward Lake Winnipeg and Hudson Bay. While the terrain is largely dedicated to agriculture, the region contains the state's largest city, Fargo, which anchors the local economy and population.

The county has seen significant demographic shifts over the last decade. As of the 2020 census, the population reached 184,525, with 2024 estimates placing the figure at 200,945. This growth makes it the most populous county in the state, containing more than 25.24% of North Dakota's total residents. The area is increasingly diverse, with recent data showing a median age of 33.7 years and a population density of 113.85 inhabitants per square mile. Despite its agricultural roots, the county is now the center of the Fargo-Moorhead Metropolitan Statistical Area.

Politically, the county has evolved from a historical Republican stronghold into a more competitive and diverse landscape. While voters once favored Republican candidates by wide margins—such as George W. Bush in 2004—recent elections have shown a shift, particularly within Fargo. This political nuance is reflected in the local legislative representation, which currently includes a mix of Democratic and Republican officials. Governance is managed by a board of commissioners, supported by a range of appointed officials who oversee everything from highway engineering to tax equalization, ensuring the administration of this rapidly developing region.

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