Washington County Flag

Washington County

State:
Illinois
County Seat:
Nashville

Washington County's estimated 2025 population is 13,362 with a growth rate of -0.65% in the past year according to the most recent United States census data. Washington County is the 75th largest county in Illinois. The 2010 population was 14,711 and has seen a growth of -9.17% since that time.

13,362
Total Population
24
Population Density (miĀ²)
75
Population Rank (State)
-87 -0.65%
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 95.59% White, and smaller percentages for Black or African American, other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Race
Population
Percentage (of total)
White13,07895.59%
Two or more races4103%
Black or African American1060.77%
Other race420.31%
Asian330.24%
Native American130.1%
Native Hawaiian or Pacific Islander00%

Washington County Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Washington County's average per capita income is $46,783. Household income levels show a median of $75,652. The poverty rate stands at 7.8%.

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$108,192-
Families$94,529$104,605
Households$75,652$89,742
Non Families$43,250$58,166

$46,783

Average Income

$75,652

Median Household Income

7.8%

Poverty Rate