How many people live in Cass County, ND?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 200,900 people living in Cass County, ND. That makes Cass County the most populous county in North Dakota. It is home to 25.1% of people living in the state.
201K
population of Cass County, ND (2024)
25.1%
County share of the North Dakota population (2024)
About 200,900 people lived in Cass County, ND in 2024.
Population estimates, 2000–2024
What are Cass County, ND’s age demographics?
About 27,000 Cass County, ND residents are aged 65 and older in 2024. That represents 13.4% of its population. For comparison, the age group represents 17.5% of North Dakota’s population and 18% in the US overall.
Another 43,700 Cass County residents, or 21.7% of the population, were children under 18. For comparison, the age group represents 23.5% of North Dakota’s population and 21.6% in the US overall.
A higher share of Cass County, ND's population is aged 18–24 than the US as a whole.
Population estimates by age group, (2024)
What are Cass County, ND’s racial and ethnic demographics?
Non-Hispanic white residents make up 80.8% of the Cass County, ND population, higher than the national share of 57.5%. Cass County, ND also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (1.4%) than the US overall (0.72%).
In contrast, Cass County’s Hispanic population accounts for 3.9%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 7.8% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Cass County, ND has a higher share of a non-Hispanic Black or African American population than North Dakota as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Cass County, ND is Fargo with about 136,300 residents in 2024.
Cities and towns in Cass County, ND ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Fargo | 136,285 |
| 2. | West Fargo | 41,027 |
| 3. | Horace | 6,286 |
| 4. | Casselton | 2,486 |
| 5. | Mapleton | 1,476 |
| 6. | Reed | 1,151 |
| 7. | Kindred | 1,030 |
| 8. | Stanley | 867 |
| 9. | Reile's Acres | 866 |
| 10. | Harwood | 839 |
Keep exploring
Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
