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 2025 population of 8,358. St. Marys is currently declining at a rate of -0.11% annually and its population has decreased by -0.56% since the most recent census, which recorded a population of 8,405 in 2020.

The average household income in St. Marys is $76,379 with a poverty rate of 9.69%. The median age in St. Marys is 36.2 years: 36.4 years for males, and 35.8 years for females.

Demographics

The racial composition of St. Marys includes 94.92% White, and smaller percentages for 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	7,896	94.92%
Two or more races	257	3.09%
Black or African American	117	1.41%
Asian	43	0.52%
Other race	6	0.07%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

St. Marys Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. Marys' average per capita income is $46,661. Household income levels show a median of $72,056. The poverty rate stands at 9.69%.

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	$89,974	-
Families	$86,568	$91,567
Households	$72,056	$76,379
Non Families	$43,885	$47,464

$46,661

Average Income

$72,056

Median Household Income

9.69%

Poverty Rate