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.
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 (98.4%)
Two or more races (0.6%)
Asian (0.6%)
Black or African American (0.4%)
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