Washington County's estimated 2026 population is 23,665 with a growth rate of 0.17% in the past year according to the most recent United States census data. Washington County is the 47th largest county in Missouri. The 2010 population was 25,198 and has seen a growth of -6.08% since that time.
Data after 2023 is projected based on recent change
The racial composition of Washington County includes 92.31% White, and smaller percentages for Black or African American, other race, Asian, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
White (92.31%)
Two or more races (5.07%)
Black or African American (1.92%)
Other race (0.4%)
Asian (0.15%)
Native Hawaiian or Pacific Islander (0.14%)
Native American (0.03%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 21,676 | 92.31% |
| Two or more races | 1,190 | 5.07% |
| Black or African American | 451 | 1.92% |
| Other race | 93 | 0.4% |
| Asian | 35 | 0.15% |
| Native Hawaiian or Pacific Islander | 32 | 0.14% |
| Native American | 6 | 0.03% |
Married
Widowed
Divorced
Separated
Never Married
Washington County's average per capita income is $37,431. Household income levels show a median of $51,886. The poverty rate stands at 18.19%.
Name | Median | Mean |
|---|---|---|
| Married Families | $74,583 | - |
| Families | $65,802 | $80,430 |
| Households | $51,886 | $75,326 |
| Non Families | $28,691 | $59,493 |
Average Income
Median Household Income
Poverty Rate
