Dunn County's 2026 population is estimated at 3,991, reflecting a -0.5% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Dunn County is the 26th largest county in North Dakota. The 2010 population was 3,536 and has grown 12.87% since 2010.
Data after 2023 is projected based on recent change
Overall: 40.4 years
Female: 41.1 years
Male: 38.5 years
There are 2,987 adults, (786 of whom are seniors) in Dunn County.
Female: 1,808 (44.8%)
Male: 2,232 (55.2%)
The racial composition of Dunn County includes 80.3% White, 9.5% Native American, and smaller percentages for other race, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 3,244 | 80.3% |
| Native American | 384 | 9.5% |
| Two or more races | 305 | 7.55% |
| Other race | 58 | 1.44% |
| Asian | 38 | 0.94% |
| Black or African American | 9 | 0.22% |
| Native Hawaiian or Pacific Islander | 2 | 0.05% |
Dunn County 's average per capita income is $50,912. Household income levels show a median of $97,689. The poverty rate stands at 7.4%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $131,146 | - |
| Families | $124,018 | $179,663 |
| Households | $97,689 | $138,082 |
| Non Families | $44,342 | $67,015 |
Average Income
Median Household Income
Poverty Rate