Washington County Flag

Washington County

State:
Missouri
County Seat:
Potosi

Washington County's estimated 2025 population is 23,818 with a growth rate of 0.6% in the past year according to the most recent United States census data. Washington County is the 46th largest county in Missouri. The 2010 population was 25,198 and has seen a growth of -5.48% since that time.

23,818
Total Population
31
Population Density (mi²)
46
Population Rank (State)
142 0.6%
Annual Population Growth

Washington County Population

Washington County Population

Data after 2023 is projected based on recent change

Demographics

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.

Population by Race

Race
Population
Percentage (of total)
White21,67692.31%
Two or more races1,1905.07%
Black or African American4511.92%
Other race930.4%
Asian350.15%
Native Hawaiian or Pacific Islander320.14%
Native American60.03%

Washington County Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

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%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$74,583-
Families$65,802$80,430
Households$51,886$75,326
Non Families$28,691$59,493

$37,431

Average Income

$51,886

Median Household Income

18.19%

Poverty Rate