Washington County's estimated 2026 population is 5,505 with a growth rate of -0.51% in the past year according to the most recent United States census data. Washington County is the 61st largest county in Kansas. The 2010 population was 5,785 and has seen a growth of -4.84% since that time.
Data after 2023 is projected based on recent change
Overall: 43.4 years
Female: 44.2 years
Male: 43.1 years
There are 4,193 adults, (1,307 of whom are seniors) in Washington County.
Female: 2,670 (48.3%)
Male: 2,863 (51.7%)
The racial composition of Washington County includes 91.52% White, and smaller percentages for other race, Native American, Asian, Black or African American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 5,064 | 91.52% |
| Two or more races | 256 | 4.63% |
| Other race | 161 | 2.91% |
| Native American | 22 | 0.4% |
| Asian | 22 | 0.4% |
| Black or African American | 8 | 0.14% |
Washington County's average per capita income is $44,035. Household income levels show a median of $65,482. The poverty rate stands at 9.28%.
Name | Median | Mean |
|---|---|---|
| Married Families | $87,557 | - |
| Families | $83,179 | $98,983 |
| Households | $65,482 | $82,039 |
| Non Families | $33,100 | $56,329 |
Average Income
Median Household Income
Poverty Rate