St. Marie Flag

St. Marie

County:
Valley County
County Seat:
No
Area (mi²):
22.898
State:
Montana

St. Marie is a CDP located in Valley County, Montana. St. Marie has a 2026 population of 332. St. Marie is currently growing at a rate of 1.53% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median household income in St. Marie is $38,971 with a poverty rate of 23.86%. The median age in St. Marie is 37.9 years: 38.4 years for males, and 36.7 years for females. For every 100 females there are 43.0 males.

332
Total Population
14
Density (mi²)
5 1.53%
Growth

St. Marie Population

St. Marie Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202633251.53%
202532741.24%

Median Age

Overall: 37.9 years
Female: 36.7 years
Male: 38.4 years

St. Marie Adults

There are 293 adults, (88 of whom are seniors) in St. Marie.

Sex Ratio

Female: 214 (69.9%)
Male: 92 (30.1%)

Demographics

The racial composition of St. Marie includes 55.88% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White17155.88%
Two or more races13544.12%
Race
Population ↓
Percentage (of total)
White17155.88%
Two or more races13544.12%

St. Marie Marital Status

Economics and Income Statistics

St. Marie 's average per capita income is $22,056. Household income levels show a median of $38,971. The poverty rate stands at 23.86%.

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
Families$57,596$56,613
Households$38,971$45,637
Married Families--
Non Families-$29,324

$22,056

Average Income

$38,971

Median Household Income

23.86%

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)