St. Marys Flag

St. Marys

County:
Auglaize County
County Seat:
No
Area (mi²):
4.668
State:
Ohio

St. Marys is a city located in Auglaize County, Ohio. St. Marys has a 2026 population of 8,363. St. Marys is currently declining at a rate of -0.07% annually and its population has decreased by -0.45% since the most recent census, which recorded a population of 8,401 in 2020.

The median household income in St. Marys is $79,516 with a poverty rate of 6.58%. The median age in St. Marys is 36.6 years: 35.4 years for males, and 40.1 years for females. For every 100 females there are 100.4 males.

8.4K
Total Population
1,792
Density (mi²)
-6 -0.07%
Growth

St. Marys Population

St. Marys Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20268,363-6-0.07%
20258,369-7-0.08%
20248,376-46-0.55%
20238,422-12-0.14%
20228,434-8-0.09%
20218,442400.48%
20208,4012643.24%
20198,137-61-0.74%
20188,198610.75%
20178,137-45-0.55%
20168,182-38-0.46%
20158,220-2-0.02%
20148,222-17-0.21%
20138,239-8-0.1%
20128,247-14-0.17%
20118,261-48-0.58%
20108,309-23-0.28%
20008,342-99-1.17%
19908,441270.32%
19808,4147159.29%
19707,699-38-0.49%
19607,7371,52924.63%
19506,20867612.22%
19405,532991.82%
19305,433-246-4.33%
19205,679-53-0.92%
19105,7323736.96%
19005,3592,35978.63%
18903,00000%

Median Age

Overall: 36.6 years
Female: 40.1 years
Male: 35.4 years

St. Marys Adults

There are 6,283 adults, (1,371 of whom are seniors) in St. Marys.

Sex Ratio

Female: 4,142 (49.9%)
Male: 4,159 (50.1%)

Demographics

The racial composition of St. Marys includes 91.18% White, and smaller percentages for Black or African American, other race, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White7,56991.18%
Two or more races5646.79%
Black or African American1421.71%
Other race150.18%
Asian110.13%
Race
Population ↓
Percentage (of total)
Two or more races4485.4%
White270.33%
Other race150.18%
Race
Population ↓
Percentage (of total)
White7,54290.86%
Black or African American1421.71%
Two or more races1161.4%
Asian110.13%

St. Marys Marital Status

Economics and Income Statistics

St. Marys ' average per capita income is $52,839. Household income levels show a median of $79,516. The poverty rate stands at 6.58%.

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$97,721-
Families$90,793$102,204
Households$79,516$86,155
Non Families$47,095$52,841

$52,839

Average Income

$79,516

Median Household Income

6.58%

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)