Wilmington

County:: Clinton County
County Seat:: Yes
Area (mi²):: 12.942
State:: Ohio

Wilmington is a city located in Clinton County, Ohio. Wilmington has a 2025 population of 12,555. It is also the county seat of Clinton County. Wilmington is currently declining at a rate of -0.17% annually and its population has decreased by -0.88% since the most recent census, which recorded a population of 12,667 in 2020.

The average household income in Wilmington is $64,291 with a poverty rate of 21.23%. The median age in Wilmington is 36.7 years: 34.5 years for males, and 38.4 years for females.

Demographics

The racial composition of Wilmington includes 86.33% White, 5.05% Black or African American, and smaller percentages for other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Black or African American

Two or more races

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	10,909	86.33%
Black or African American	638	5.05%
Two or more races	584	4.62%
Other race	282	2.23%
Asian	201	1.59%
Native American	23	0.18%
Native Hawaiian or Pacific Islander	0	0%

Wilmington Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Wilmington's average per capita income is $39,699. Household income levels show a median of $52,661. The poverty rate stands at 21.23%.

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	$77,500	-
Families	$68,649	$78,313
Households	$52,661	$64,291
Non Families	$45,086	$49,982

$39,699

Average Income

$52,661

Median Household Income

21.23%

Poverty Rate