Marietta

County:: Washington County
County Seat:: Yes
Area (mi²):: 8.429
State:: Ohio

Marietta is a city located in Washington County, Ohio. Marietta has a 2025 population of 12,913. It is also the county seat of Washington County. Marietta is currently declining at a rate of -0.68% annually and its population has decreased by -3.31% since the most recent census, which recorded a population of 13,355 in 2020.

The average household income in Marietta is $79,856 with a poverty rate of 19%. The median age in Marietta is 39.3 years: 38.5 years for males, and 39.8 years for females.

Demographics

The racial composition of Marietta includes 94.12% White, and smaller percentages for Two or more races, Black or African American, Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	12,501	94.12%
Two or more races	290	2.18%
Black or African American	217	1.63%
Asian	152	1.14%
Other race	96	0.72%
Native American	26	0.2%
Native Hawaiian or Pacific Islander	0	0%

Marietta Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Marietta's average per capita income is $37,842. Household income levels show a median of $45,986. The poverty rate stands at 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	$90,697	-
Families	$68,750	$108,363
Households	$45,986	$79,856
Non Families	$33,294	$47,988

$37,842

Average Income

$45,986

Median Household Income

19%

Poverty Rate