Demographics in St. Mary, MT

Population, age, race, ethnicity, and household statistics — 2023 ACS Data

Where is St. Mary?

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Population

Source: U.S. Census Bureau ACS (2023)

Total Population

209

Male

123

58.9%

Female

86

41.1%

Median Age

22.0

Race & Ethnicity

Source: U.S. Census Bureau ACS (2023)
White
77.5%
Hispanic
12.9%
Other
7.2%

Education & Household

Source: U.S. Census Bureau ACS (2023)

Bachelor's or Higher

11.0%

High School or Higher

16.8%

Foreign Born

14.3%

Veterans

5.7%

Married

11.0%

Avg Household Size

1.6

Marital Status by Age

Source: U.S. Census Bureau ACS (2023)

St. Mary, MT has a population of 209 with a median age of 22.0. The racial makeup is 77.5% White, 12.9% Hispanic, 0.0% Black. About 11.0% of residents hold a bachelor's degree or higher. The foreign-born population is 14.3%.