Marquette County's 2026 population is estimated at 15,527, reflecting a -0.69% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Marquette County is the 64th largest county in Wisconsin. The 2010 population was 15,372 and has grown 1.01% since 2010.
Data after 2023 is projected based on recent change
Overall: 50.7 years
Female: 51.3 years
Male: 49.9 years
There are 12,786 adults, (4,183 of whom are seniors) in Marquette County.
Female: 7,574 (48.1%)
Male: 8,172 (51.9%)
The racial composition of Marquette County includes 93.2% White, and smaller percentages for other race, Black or African American, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 14,675 | 93.2% |
| Two or more races | 652 | 4.14% |
| Other race | 228 | 1.45% |
| Black or African American | 77 | 0.49% |
| Asian | 72 | 0.46% |
| Native American | 42 | 0.27% |
Marquette County 's average per capita income is $44,502. Household income levels show a median of $65,681. The poverty rate stands at 13.05%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $87,741 | - |
| Families | $79,894 | $96,582 |
| Households | $65,681 | $82,123 |
| Non Families | $40,979 | $52,853 |
Average Income
Median Household Income
Poverty Rate
