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 and multiracial populations.

Population by Race

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%

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