Washington is located in Washington County, Iowa. Washington has a 2025 population of 45,454 . 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 $76,553 with a poverty rate of 31.38%. The median age in Washington is 22.4 years: 22.4 years for males, and 22.3 years for females. For every 100 females there are 118.7 males.
Data after 2023 is projected based on recent change
The racial composition of Washington includes 80.76% White, 8.51% Asian, 3.35% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
White (80.76%)
Asian (8.51%)
Two or more races (5.15%)
Black or African American (3.35%)
Other race (1.67%)
Native American (0.39%)
Native Hawaiian or Pacific Islander (0.17%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 36,709 | 80.76% |
| Asian | 3,867 | 8.51% |
| Two or more races | 2,342 | 5.15% |
| Black or African American | 1,523 | 3.35% |
| Other race | 758 | 1.67% |
| Native American | 179 | 0.39% |
| Native Hawaiian or Pacific Islander | 76 | 0.17% |
Married
Widowed
Divorced
Separated
Never Married
Washington's average per capita income is $46,975. Household income levels show a median of $53,930. The poverty rate stands at 31.38%.
Name | Median | Mean |
|---|---|---|
| Married Families | $130,214 | - |
| Families | $103,636 | $140,140 |
| Households | $53,930 | $76,553 |
| Non Families | $38,545 | $46,573 |
Average Income
Median Household Income
Poverty Rate