Marietta Flag

Marietta

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

Marietta is a city located in Washington County, Ohio. Marietta has a 2026 population of 12,878. It is also the county seat of Washington County. Marietta is currently declining at a rate of -0.62% annually and its population has decreased by -3.61% since the most recent census, which recorded a population of 13,361 in 2020.

The median household income in Marietta is $47,873 with a poverty rate of 19.11%. The median age in Marietta is 39.4 years: 37.1 years for males, and 41.8 years for females. For every 100 females there are 93.7 males.

12.9K
Total Population
1,528
Density (mi²)
-80 -0.62%
Growth

Marietta Population

Marietta Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202612,878-80-0.62%
202512,958-81-0.62%
202413,039-45-0.34%
202313,084-95-0.72%
202213,179-137-1.03%
202113,316-45-0.34%
202013,361-28-0.21%
201913,405-170-1.25%
201813,575-137-1%
201713,712880.65%
201613,624-226-1.63%
201513,850-76-0.55%
201413,926-122-0.87%
201314,048210.15%
201214,027-23-0.16%
201114,050-32-0.23%
201014,082-3-0.02%
200014,515-511-3.4%
199015,026-1,441-8.75%
198016,467-394-2.34%
197016,861140.08%
196016,8478415.25%
195016,0061,46310.06%
194014,5432581.81%
193014,285-855-5.65%
192015,1402,21717.16%
191012,923-425-3.18%
190013,3485,07561.34%
18908,2732,82951.97%
18805,4442264.33%
18705,21889520.7%
18604,3231,14836.16%
18503,17500%

Median Age

Overall: 39.4 years
Female: 41.8 years
Male: 37.1 years

Marietta Adults

There are 10,829 adults, (2,940 of whom are seniors) in Marietta.

Sex Ratio

Female: 6,815 (51.6%)
Male: 6,388 (48.4%)

Demographics

The racial composition of Marietta includes 93.08% White, and smaller percentages for Black or African American, other race, Asian, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White12,28993.08%
Two or more races5243.97%
Black or African American1531.16%
Other race1110.84%
Asian1060.8%
Native American200.15%
Race
Population ↓
Percentage (of total)
Two or more races760.58%
Other race560.42%
White430.33%
Native American190.14%
Race
Population ↓
Percentage (of total)
White12,24692.75%
Two or more races4483.39%
Black or African American1531.16%
Asian1060.8%
Other race550.42%
Native American10.01%

Marietta Marital Status

Economics and Income Statistics

Marietta 's average per capita income is $37,495. Household income levels show a median of $47,873. The poverty rate stands at 19.11%.

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$93,389-
Families$72,110$83,348
Households$47,873$67,788
Non Families$31,857$47,908

$37,495

Average Income

$47,873

Median Household Income

19.11%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)