Mahnomen County's 2026 population is estimated at 5,224, reflecting a -0.68% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Mahnomen County is the 82nd largest county in Minnesota. The 2010 population was 5,440 and has grown -3.97% since 2010.
Data after 2023 is projected based on recent change
Overall: 35.4 years
Female: 36.2 years
Male: 34.3 years
There are 3,697 adults, (957 of whom are seniors) in Mahnomen County.
Female: 2,622 (48.9%)
Male: 2,736 (51.1%)
The racial composition of Mahnomen County includes 44.87% White, 34.79% 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 | 2,404 | 44.87% |
| Native American | 1,864 | 34.79% |
| Two or more races | 1,010 | 18.85% |
| Other race | 37 | 0.69% |
| Asian | 25 | 0.47% |
| Black or African American | 14 | 0.26% |
| Native Hawaiian or Pacific Islander | 4 | 0.07% |
Mahnomen County 's average per capita income is $44,805. Household income levels show a median of $59,441. The poverty rate stands at 18.34%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $106,136 | $111,204 |
| Families | $72,375 | $85,881 |
| Households | $59,441 | $74,650 |
| Non Families | $37,083 | $43,051 |
Average Income
Median Household Income
Poverty Rate
