Ontonagon County's 2026 population is estimated at 5,758, reflecting a -0.57% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Ontonagon County is the 82nd largest county in Michigan. The 2010 population was 6,776 and has grown -15.02% since 2010.
Data after 2023 is projected based on recent change
Overall: 59.8 years
Female: 60 years
Male: 59.4 years
There are 5,181 adults, (2,236 of whom are seniors) in Ontonagon County.
Female: 2,834 (48.4%)
Male: 3,016 (51.6%)
The racial composition of Ontonagon County includes 92.56% White, and smaller percentages for other race, Black or African American, Native American, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 5,415 | 92.56% |
| Two or more races | 315 | 5.38% |
| Other race | 37 | 0.63% |
| Black or African American | 31 | 0.53% |
| Native American | 28 | 0.48% |
| Asian | 24 | 0.41% |
Ontonagon County 's average per capita income is $36,637. Household income levels show a median of $54,398. The poverty rate stands at 12.52%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $73,487 | - |
| Families | $71,342 | $78,366 |
| Households | $54,398 | $67,617 |
| Non Families | $33,418 | $43,920 |
Average Income
Median Household Income
Poverty Rate
