St. Mary, MO
Population 255 · Missouri
About St. Mary, MO
St. Mary is a small community located in Missouri with a population of 255 residents according to the latest US Census Bureau American Community Survey data. The median household income is $57,500 per year, which is 23% below the national median of $75,149. The median age of 52.2 years is notably older the US median age of 38.9 years, suggesting a more established community with a higher proportion of long-term residents.
Housing Market Overview
The housing market in St. Mary features a median home value of $97,500, which is 60% 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 $783, 33% below the national average of $1,163/month. Of the 145 total housing units, 75% are owner-occupied (75 units) and 25% are renter-occupied (25 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in St. Mary shows an unemployment rate of 6.5%, which is significantly above the national rate of 3.7%, suggesting economic challenges in the area. The poverty rate stands at 24.8%, above the national average of 12.4%. Workers in St. Mary have an average one-way commute time of 36.6 minutes, suggesting many residents commute to jobs in a nearby metro area.
Education & Demographics
10.6% of St. Mary residents aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The lower educational attainment rate may reflect the area's industry mix, with more employment in trades, manufacturing, or agricultural sectors. The community's demographic composition includes 0.0% White, 1.2% Hispanic or Latino, 0.0% Black or African American, and 0.8% Asian residents, with 0.0% of the population being foreign-born.
Cost of Living in St. Mary, MO
Compared to national averages, St. Mary has a median household income of $57,500 (23% below the national median of $75,149). Home values average $97,500, which is 60% below the national median. Monthly rent at $783 is 33% below the US average of $1,163. Within Missouri, St. Mary's income is 6% below the state average of $61,047, and home values are 35% below the state median of $150,786.
Why Live in St. Mary, MO?
St. Mary offers affordable housing with a median home value of $97,500, below the US average of $244,900, and rent that’s lower than the national average at $783/month.
Potential considerations include median household income ($57,500) 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 255 with a median age of 52.2 years. Compare St. Mary with other cities to see how it stacks up, or explore all cities in Missouri.
Similar Cities Near St. Mary
Cities in Missouri with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Houstonia | 255 | $37,396 | $48,900 | Compare |
| Junction City | 254 | $25,833 | $95,000 | Compare |
| Rushville | 254 | $58,750 | $39,200 | Compare |
| High Hill | 252 | $65,625 | $141,100 | Compare |
| Lohman | 258 | $66,875 | $205,000 | Compare |
| Oak Ridge | 258 | $68,542 | $145,800 | Compare |
| Stella | 252 | $39,345 | $0 | Compare |
| West Sullivan | 252 | $49,500 | $133,300 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Missouri
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, MO?
The population of St. Mary, MO is 255 according to the latest US Census Bureau American Community Survey estimates. This makes it a small community in Missouri.
What is the median household income in St. Mary?
The median household income in St. Mary, MO is $57,500 per year, which is 23% below the national median of $75,149.
What is the median home value in St. Mary?
The median home value in St. Mary, MO is $97,500, which is 60% 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, MO is $783, which is 33% below the national average of $1,163/month.
What is the unemployment rate in St. Mary?
The unemployment rate in St. Mary, MO is 6.5%, compared to the national average of 3.7%. Job seekers may want to research the dominant industries in the area.
Is St. Mary, MO a good place to live?
St. Mary offers a moderate cost of living, affordable housing, and growing employment opportunities. With a population of 255 and a median age of 52.2, the city appeals to established professionals and retirees.
How educated is St. Mary, MO?
10.6% of residents in St. Mary aged 25 and older hold a bachelor's degree or higher, compared to the national average of 33.7%. The educational profile reflects the area's industry mix and employment landscape.
What is the cost of living in St. Mary?
Key cost-of-living indicators for St. Mary, MO: median home value is $97,500 (60% below national), median rent is $783/month, and median household income is $57,500. The home-value-to-income ratio is 1.7x, indicating relatively affordable housing relative to local incomes.
What is the poverty rate in St. Mary?
The poverty rate in St. Mary, MO is 24.8%, 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, MO?
St. Mary's population is 0.0% White, 1.2% Hispanic or Latino, 0.0% Black or African American, 0.8% Asian, and 8.6% two or more races. 0.0% of residents are foreign-born.