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 2025 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 average household income in St. Mary is $64,719 with a poverty rate of 4.29%. The median age in St. Mary is 28.3 years: 26.4 years for males, and 31.8 years for females. For every 100 females there are 103.9 males.

140
Total Population
180
Density (mi²)

St. Mary Population

St. Mary Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of St. Mary includes 93.33% White, and smaller percentages for Black or African American and multiracial populations.

Population by Race

White (93.33%)

Two or more races (5.71%)

Black or African American (0.95%)

Race
Population
Percentage (of total)
White19693.33%
Two or more races125.71%
Black or African American20.95%

St. Mary Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. Mary's average per capita income is $41,806. Household income levels show a median of $60,833. The poverty rate stands at 4.29%.

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
Households$60,833$64,719
Families$60,625$68,135
Married Families--
Non Families-$57,888

$41,806

Average Income

$60,833

Median Household Income

4.29%

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)