St. Mary, MT
Population 209 · Montana
About St. Mary, MT
St. Mary is a small community located in Montana with a population of 209 residents according to the latest US Census Bureau American Community Survey data. The median household income is $0 per year, which is 100% below the national median of $75,149. The median age of 22 years is notably younger the US median age of 38.9 years, indicating a younger, often more dynamic population base.
Housing Market Overview
The housing market in St. Mary features a median home value of $0, which is 100% below the national median of $244,900. This makes St. Mary one of the more affordable markets in the country, potentially attractive for first-time homebuyers. Median monthly rent is $0, 100% below the national average of $1,163/month. Of the 80 total housing units, 68% are owner-occupied (17 units) and 32% are renter-occupied (8 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in St. Mary shows an unemployment rate of 8.9%, which is significantly above the national rate of 3.7%, suggesting economic challenges in the area. The poverty rate stands at 52.6%, above the national average of 12.4%. Workers in St. Mary have an average one-way commute time of 11.8 minutes, one of the shorter commutes in the region.
Education & Demographics
34.3% of St. Mary residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This is in line with national trends in educational attainment. The community's demographic composition includes 5.7% White, 8.1% Hispanic or Latino, 0.0% Black or African American, and 7.2% Asian residents, with 14.4% of the population being foreign-born.
Cost of Living in St. Mary, MT
Compared to national averages, St. Mary has a median household income of $0 (100% below the national median of $75,149). Home values average $0, which is 100% below the national median. Monthly rent at $0 is 100% below the US average of $1,163. Within Montana, St. Mary's income is 100% below the state average of $65,821, and home values are 100% below the state median of $288,703.
Why Live in St. Mary, MT?
St. Mary offers affordable housing with a median home value of $0, below the US average of $244,900, and rent that’s lower than the national average at $0/month, and a well-educated community where 34.3% of residents hold a bachelor’s degree or higher. Additionally, the city features short commute times averaging just 11.8 minutes.
Potential considerations include median household income ($0) that falls below the national average. However, St. Mary’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
St. Mary has a population of 209 with a median age of 22 years. Compare St. Mary with other cities to see how it stacks up, or explore all cities in Montana.
Similar Cities Near St. Mary
Cities in Montana with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Highwood | 209 | $71,875 | $169,100 | Compare |
| West Glacier | 209 | $87,344 | $565,500 | Compare |
| Elliston | 208 | $41,719 | $248,300 | Compare |
| Winifred | 207 | $75,089 | $0 | Compare |
| Riverview Colony | 212 | $2,499 | $0 | Compare |
| Charlos Heights | 213 | $88,042 | $0 | Compare |
| Moore | 204 | $45,972 | $180,200 | Compare |
| Gibson Flats | 203 | $0 | $0 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Montana
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
Compare St. Mary With Other Cities
Frequently Asked Questions about St. Mary
What is the population of St. Mary, MT?
The population of St. Mary, MT is 209 according to the latest US Census Bureau American Community Survey estimates. This makes it a small community in Montana.
What is the median household income in St. Mary?
The median household income in St. Mary, MT is $0 per year, which is 100% below the national median of $75,149.
What is the median home value in St. Mary?
The median home value in St. Mary, MT is $0, which is 100% below the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in St. Mary?
The median monthly rent in St. Mary, MT is $0, which is 100% below the national average of $1,163/month.
What is the unemployment rate in St. Mary?
The unemployment rate in St. Mary, MT is 8.9%, compared to the national average of 3.7%. Job seekers may want to research the dominant industries in the area.
Is St. Mary, MT a good place to live?
St. Mary offers a moderate cost of living, affordable housing, and growing employment opportunities. With a population of 209 and a median age of 22, the city appeals to young professionals and families.
How educated is St. Mary, MT?
34.3% of residents in St. Mary aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. This above-average educational attainment often reflects a knowledge-based local economy.
What is the cost of living in St. Mary?
Key cost-of-living indicators for St. Mary, MT: median home value is $0 (100% below national), median rent is $0/month, and median household income is $0. The home-value-to-income ratio is NaNx, a moderate figure by national standards.
What is the poverty rate in St. Mary?
The poverty rate in St. Mary, MT is 52.6%, compared to the national average of 12.4%. Residents and prospective movers should be aware of the economic challenges facing parts of this community.
How diverse is St. Mary, MT?
St. Mary's population is 5.7% White, 8.1% Hispanic or Latino, 0.0% Black or African American, 7.2% Asian, and 0.0% two or more races. 14.4% of residents are foreign-born.