Winthrop is a city located in Buchanan County, Iowa. Winthrop has a 2025 population of 811 . Winthrop is currently declining at a rate of -0.37% annually and its population has decreased by -1.7% since the most recent census, which recorded a population of 825 in 2020.
The average household income in Winthrop is $84,146 with a poverty rate of 3.24%. The median age in Winthrop is 37.5 years: 34.6 years for males, and 40.5 years for females. For every 100 females there are 121.1 males.
Data after 2023 is projected based on recent change
The racial composition of Winthrop includes 97.41% White, and smaller percentages for Two or more races, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White (97.41%)
Two or more races (2.22%)
Black or African American (0.28%)
Native Hawaiian or Pacific Islander (0.09%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 1,053 | 97.41% |
| Two or more races | 24 | 2.22% |
| Black or African American | 3 | 0.28% |
| Native Hawaiian or Pacific Islander | 1 | 0.09% |
Married
Widowed
Divorced
Separated
Never Married
Winthrop's average per capita income is $48,343. Household income levels show a median of $64,904. The poverty rate stands at 3.24%.
Name | Median | Mean |
|---|---|---|
| Married Families | $89,531 | - |
| Families | $75,250 | $94,640 |
| Households | $64,904 | $84,146 |
| Non Families | $48,500 | $47,402 |
Average Income
Median Household Income
Poverty Rate