Marinette County's 2026 population is estimated at 42,803, reflecting a 0.54% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Marinette County is the 36th largest county in Wisconsin. The 2010 population was 41,662 and has grown 2.74% since 2010.
Data after 2023 is projected based on recent change
Overall: 48.7 years
Female: 49.6 years
Male: 48 years
There are 34,114 adults, (10,636 of whom are seniors) in Marinette County.
Female: 20,672 (49.2%)
Male: 21,374 (50.8%)
The racial composition of Marinette County includes 93.94% White, and smaller percentages for other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 39,496 | 93.94% |
| Two or more races | 1,638 | 3.9% |
| Other race | 330 | 0.78% |
| Black or African American | 214 | 0.51% |
| Asian | 214 | 0.51% |
| Native American | 120 | 0.29% |
| Native Hawaiian or Pacific Islander | 34 | 0.08% |
Marinette County 's average per capita income is $47,766. Household income levels show a median of $63,809. The poverty rate stands at 9.76%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $82,399 | $100,459 |
| Families | $76,617 | $93,031 |
| Households | $63,809 | $79,117 |
| Non Families | $42,253 | $51,701 |
Average Income
Median Household Income
Poverty Rate
