St. Mary Flag

St. Mary

County:
Marion County
County Seat:
No
Area (mi²):
0.778
State:
Kentucky

St. Mary is a city located in Marion County, Kentucky. St. Mary has a 2026 population of 140. St. Mary is currently declining at a rate of 0% annually and its population has increased by 0.72% since the most recent census, which recorded a population of 139 in 2020.

140
Total Population
180
Density (mi²)

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)