St. Marys Flag

St. Marys

County:
Elk County
County Seat:
No
Area (mi²):
99.316
State:
Pennsylvania

St. Marys is a city located in Elk County, Pennsylvania. St. Marys has a 2026 population of 12,181. St. Marys is currently declining at a rate of -0.73% annually and its population has decreased by -4.24% since the most recent census, which recorded a population of 12,720 in 2020.

The median household income in St. Marys is $67,167 with a poverty rate of 7.85%. The median age in St. Marys is 51.6 years: 52.6 years for males, and 50.5 years for females. For every 100 females there are 94.7 males.

12.2K
Total Population
123
Density (mi²)
-90 -0.73%
Growth

St. Marys Population

St. Marys Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202612,181-90-0.73%
202512,271-90-0.73%
202412,361-48-0.39%
202312,409-102-0.82%
202212,511-142-1.12%
202112,653-67-0.53%
202012,720-19-0.15%
201912,269-79-0.64%
201812,348-69-0.56%
201712,417-94-0.75%
201612,511-145-1.15%
201512,656-128-1%
201412,784-102-0.79%
201312,886-57-0.44%
201212,943-74-0.57%
201113,017-19-0.15%
201013,036-34-0.26%
200014,5028,991163.15%
19905,511-906-14.12%
19806,417-1,053-14.1%
19707,470-595-7.38%
19608,0652192.79%
19507,8461932.52%
19407,6532202.96%
19307,4334666.69%
19206,9676219.79%
19106,3462,05147.75%
19004,29500%

Median Age

Overall: 51.6 years
Female: 50.5 years
Male: 52.6 years

St. Marys Adults

There are 10,459 adults, (3,353 of whom are seniors) in St. Marys.

Sex Ratio

Female: 6,434 (51.4%)
Male: 6,095 (48.6%)

Demographics

The racial composition of St. Marys includes 94.83% White, and smaller percentages for Black or African American, other race, Asian and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White11,88194.83%
Two or more races4273.41%
Black or African American1651.32%
Other race360.29%
Asian200.16%
Race
Population ↓
Percentage (of total)
White1251%
Other race360.29%
Two or more races350.28%
Race
Population ↓
Percentage (of total)
White11,75693.83%
Two or more races3923.13%
Black or African American1651.32%
Asian200.16%

St. Marys Marital Status

Economics and Income Statistics

St. Marys ' average per capita income is $42,487. Household income levels show a median of $67,167. The poverty rate stands at 7.85%.

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$93,339-
Families$87,548$101,670
Households$67,167$80,231
Non Families$35,015$42,493

$42,487

Average Income

$67,167

Median Household Income

7.85%

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)