Winnebago County's estimated 2026 population is 10,151 with a growth rate of -0.98% in the past year according to the most recent United States census data. Winnebago County is the 71st largest county in Iowa. The 2010 population was 10,845 and has seen a growth of -6.4% since that time.
Data after 2023 is projected based on recent change
Overall: 42.7 years
Female: 44 years
Male: 41.4 years
There are 8,354 adults, (2,341 of whom are seniors) in Winnebago County.
Female: 5,116 (48.3%)
Male: 5,467 (51.7%)
The racial composition of Winnebago County includes 89.42% White, and smaller percentages for Black or African American, Asian, other race, Native American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 9,463 | 89.42% |
| Two or more races | 634 | 5.99% |
| Black or African American | 237 | 2.24% |
| Asian | 140 | 1.32% |
| Other race | 87 | 0.82% |
| Native American | 22 | 0.21% |
Winnebago County's average per capita income is $46,646. Household income levels show a median of $67,642. The poverty rate stands at 11.18%.
Name | Median | Mean |
|---|---|---|
| Married Families | $100,938 | - |
| Families | $88,750 | $107,301 |
| Households | $67,642 | $85,071 |
| Non Families | $41,006 | $52,515 |
Average Income
Median Household Income
Poverty Rate