Washington is located in Washington County, Iowa. Washington has a 2025 population of 3,338 . It is also the county seat of Washington County . Washington is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The average household income in Washington is $110,292 with a poverty rate of 4.97%. The median age in Washington is 42.5 years: 42.7 years for males, and 41.6 years for females. For every 100 females there are 97.3 males.
Data after 2023 is projected based on recent change
The racial composition of Washington includes 98.38% White, and smaller percentages for Two or more races, Asian, Black or African American and multiracial populations.
White (98.38%)
Two or more races (0.6%)
Asian (0.57%)
Black or African American (0.45%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,284 | 98.38% |
| Two or more races | 20 | 0.6% |
| Asian | 19 | 0.57% |
| Black or African American | 15 | 0.45% |
Married
Widowed
Divorced
Separated
Never Married
Washington's average per capita income is $62,854. Household income levels show a median of $94,844. The poverty rate stands at 4.97%.
Name | Median | Mean |
|---|---|---|
| Married Families | $126,912 | - |
| Families | $111,685 | $129,592 |
| Households | $94,844 | $110,292 |
| Non Families | $45,341 | $62,369 |
Average Income
Median Household Income
Poverty Rate