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.

The median household income in St. Mary is $47,500 with a poverty rate of 3.4%. The median age in St. Mary is 34.6 years: 37 years for males, and 31.2 years for females. For every 100 females there are 72.9 males.

140
Total Population
180
Density (mi²)

St. Mary Population

St. Mary Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202614000%
202514000%
202414000%
202314000%
202214010.72%
202113900%
202013900%
2019132-1-0.75%
201813321.53%
201713110.77%
2016130-1-0.76%
201513110.77%
2014130-1-0.76%
201313121.55%
2012129-1-0.77%
2011130130
201012900%

Median Age

Overall: 34.6 years
Female: 31.2 years
Male: 37 years

St. Mary Adults

There are 90 adults, (17 of whom are seniors) in St. Mary.

Sex Ratio

Female: 85 (57.8%)
Male: 62 (42.2%)

Demographics

The racial composition of St. Mary includes 87.07% White, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White12887.07%
Two or more races1610.88%
Black or African American32.04%
Race
Population ↓
Percentage (of total)
White12887.07%
Two or more races1610.88%
Black or African American32.04%

St. Mary Marital Status

Economics and Income Statistics

St. Mary 's average per capita income is $40,000. Household income levels show a median of $47,500. The poverty rate stands at 3.4%.

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$77,500-
Families$64,063$84,409
Households$47,500$70,548
Non Families-$33,231

$40,000

Average Income

$47,500

Median Household Income

3.4%

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)