Winnebago County's 2026 population is estimated at 175,711, reflecting a 0.69% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Winnebago County is the 7th largest county in Wisconsin. The 2010 population was 167,144 and has grown 5.13% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.7 years
Female: 39.7 years
Male: 38 years
There are 137,075 adults, (29,894 of whom are seniors) in Winnebago County.
Female: 84,530 (49.2%)
Male: 87,239 (50.8%)
The racial composition of Winnebago County includes 86.53% White, 3.24% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 148,625 | 86.53% |
| Two or more races | 9,872 | 5.75% |
| Asian | 5,561 | 3.24% |
| Black or African American | 4,785 | 2.79% |
| Other race | 2,203 | 1.28% |
| Native American | 657 | 0.38% |
| Native Hawaiian or Pacific Islander | 66 | 0.04% |
Winnebago County 's average per capita income is $52,426. Household income levels show a median of $74,925. The poverty rate stands at 11.33%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $111,227 | $133,420 |
| Families | $98,264 | $117,546 |
| Households | $74,925 | $94,286 |
| Non Families | $47,617 | $58,988 |
Average Income
Median Household Income
Poverty Rate
