Winneshiek County's estimated 2026 population is 19,713 with a growth rate of -0.03% 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 -6.47% 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 (94.35%)
Two or more races (2.91%)
Other race (1.22%)
Black or African American (0.68%)
Asian (0.58%)
Native American (0.25%)
Native Hawaiian or Pacific Islander (0.01%)
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
