Slope County's 2026 population is estimated at 622, reflecting a -2.96% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Slope County is the 53rd largest county in North Dakota. The 2010 population was 732 and has grown -15.03% since 2010.
Data after 2023 is projected based on recent change
Overall: 54.1 years
Female: 54 years
Male: 54.2 years
There are 644 adults, (220 of whom are seniors) in Slope County.
Female: 331 (43.2%)
Male: 435 (56.8%)
The racial composition of Slope County includes 92.43% White, and smaller percentages for other race and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 708 | 92.43% |
| Two or more races | 52 | 6.79% |
| Other race | 6 | 0.78% |
Slope County 's average per capita income is $48,713. Household income levels show a median of $71,250. The poverty rate stands at 4.96%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $101,429 | - |
| Families | $101,250 | $125,673 |
| Households | $71,250 | $92,091 |
| Non Families | $35,000 | $50,785 |
Average Income
Median Household Income
Poverty Rate