Winneshiek County's estimated 2025 population is 19,641 with a growth rate of -0.44% in the past year according to the most recent United States census data. Winneshiek County is the 33rd largest county in Iowa. The 2010 population was 21,076 and has seen a growth of -6.81% since that time.
Data after 2023 is projected based on recent change
The racial composition of Winneshiek County includes 94.35% White, and smaller percentages for Two or more races, other race, Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Other race
Black or African American
Asian
Native American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 18,844 | 94.35% |
| Two or more races | 581 | 2.91% |
| Other race | 244 | 1.22% |
| Black or African American | 136 | 0.68% |
| Asian | 116 | 0.58% |
| Native American | 50 | 0.25% |
| Native Hawaiian or Pacific Islander | 1 | 0.01% |
Married
Widowed
Divorced
Separated
Never Married
Winneshiek County's average per capita income is $47,766. Household income levels show a median of $75,652. The poverty rate stands at 7.89%.
Name | Median | Mean |
|---|---|---|
| Married Families | $101,514 | - |
| Families | $97,114 | $120,480 |
| Households | $75,652 | $97,497 |
| Non Families | $42,985 | $56,331 |
Average Income
Median Household Income
Poverty Rate
