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 2025 population of 12,183. St. Marys is currently declining at a rate of -0.88% annually and its population has decreased by -4.24% since the most recent census, which recorded a population of 12,722 in 2020.

The average household income in St. Marys is $80,127 with a poverty rate of 8.43%.The median age in St. Marys is 50.3 years: 51.2 years for males, and 49.8 years for females.

12.2K
Total Population
123
Density (mi²)
-108 -0.88%
Growth

St. Marys Population

Demographics

Economics and Income Statistics

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)