St. Mary Flag

St. Mary

County:
Glacier County
County Seat:
No
Area (mi²):
0.753
State:
Montana

St. Mary is a CDP located in Glacier County, Montana. St. Mary has a 2025 population of 303. St. Mary is currently growing at a rate of 7.45% annually but its population has decreased by -47.67% since the most recent census, which recorded a population of 579 in 2020.

The average household income in St. Mary is -$1000.00 Mn with a poverty rate of 52.58%. The median age in St. Mary is 22 years: 21.6 years for males, and 24.6 years for females.

303
Total Population
403
Density (mi²)
21 7.45%
Growth

St. Mary Population

St. Mary Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of St. Mary includes 77.51% White, 8.13% Native American, 7.18% Native Hawaiian or Pacific Islander, 7.18% other race, and smaller percentages for Black or African American, Asian, Two or more races and multiracial populations.

Population by Race

White

Native American

Native Hawaiian or Pacific Islander

Other race

Black or African American

Asian

Two or more races

Race
Population
Percentage (of total)
White16277.51%
Native American178.13%
Native Hawaiian or Pacific Islander157.18%
Other race157.18%
Black or African American00%
Asian00%
Two or more races00%

St. Mary Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

St. Mary's average per capita income is $0. Household income levels show a median of $0. The poverty rate stands at 52.58%.

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--
Families--
Married Families--
Non Families--

$0

Average Income

$0

Median Household Income

52.58%

Poverty Rate

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)