Winnebago County's estimated 2025 population is 10,435 with a growth rate of -0.65% in the past year according to the most recent United States census data. Winnebago County is the 70th largest county in Iowa. The 2010 population was 10,845 and has seen a growth of -3.78% since that time.
Data after 2023 is projected based on recent change
The racial composition of Winnebago County includes 90.79% White, 3.19% Asian, and smaller percentages for Black or African American, other race, Native American and multiracial populations.
White (90.8%)
Two or more races (4.3%)
Asian (3.2%)
Black or African American (0.9%)
Other race (0.7%)
Native American (0.1%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 9,667 | 90.79% |
| Two or more races | 457 | 4.29% |
| Asian | 340 | 3.19% |
| Black or African American | 98 | 0.92% |
| Other race | 73 | 0.69% |
| Native American | 13 | 0.12% |
Married
Widowed
Divorced
Separated
Never Married
Winnebago County's average per capita income is $44,971. Household income levels show a median of $63,719. The poverty rate stands at 9.83%.
Name | Median | Mean |
|---|---|---|
| Married Families | $101,875 | - |
| Families | $83,987 | $106,285 |
| Households | $63,719 | $84,968 |
| Non Families | $41,011 | $48,593 |
Average Income
Median Household Income
Poverty Rate