St. Marys, IA
Population 112 · Iowa
About St. Marys, IA
St. Marys is a small community located in Iowa with a population of 112 residents according to the latest US Census Bureau American Community Survey data. The median household income is $78,750 per year, which is 5% above the national median of $75,149. The median age of 53.5 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. Marys features a median home value of $168,800, which is 31% below the national median of $244,900. This positions St. Marys in a moderately priced market relative to the rest of the country. Median monthly rent is $1,300, 12% above the national average of $1,163/month. Of the 52 total housing units, 77% are owner-occupied (40 units) and 23% are renter-occupied (12 units). The high homeownership rate suggests a stable, established residential community.
Economy & Employment
The local economy in St. Marys shows an unemployment rate of 0.0%, which is lower than the national rate of 3.7%, indicating a relatively strong job market. The poverty rate stands at 6.3%, below the national average of 12.4%, reflecting generally favorable economic conditions. Workers in St. Marys have an average one-way commute time of 28.2 minutes.
Education & Demographics
23.2% of St. Marys 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, 0.0% Hispanic or Latino, 0.0% Black or African American, and 0.0% Asian residents, with 1.8% of the population being foreign-born.
Cost of Living in St. Marys, IA
Compared to national averages, St. Marys has a median household income of $78,750 (5% above the national median of $75,149). Home values average $168,800, which is 31% below the national median. Monthly rent at $1,300 is 12% above the US average of $1,163. Within Iowa, St. Marys's income is 16% above the state average of $67,947, and home values are 28% above the state median of $132,237.
Why Live in St. Marys, IA?
St. Marys offers a strong local economy with a median household income of $78,750, well above the national average, and affordable housing with a median home value of $168,800, below the US average of $244,900, and a strong job market with an unemployment rate of just 0.0%. Additionally, the city features a low poverty rate of 6.3%, better than the national average.
St. Marys has a population of 112 with a median age of 53.5 years. Compare St. Marys with other cities to see how it stacks up, or explore all cities in Iowa.
Similar Cities Near St. Marys
Cities in Iowa with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Monmouth | 112 | $46,389 | $53,100 | Compare |
| Mount Union | 111 | $48,250 | $84,500 | Compare |
| Oak Hills | 111 | $250,001 | $350,000 | Compare |
| Shannon City | 113 | $90,139 | $45,000 | Compare |
| Willey | 113 | $100,417 | $156,300 | Compare |
| Ledyard | 114 | $34,000 | $31,700 | Compare |
| North Buena Vista | 110 | $53,750 | $88,300 | Compare |
| Palmer | 114 | $60,625 | $36,500 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Iowa
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
Compare St. Marys With Other Cities
Frequently Asked Questions about St. Marys
What is the population of St. Marys, IA?
The population of St. Marys, IA is 112 according to the latest US Census Bureau American Community Survey estimates. This makes it a small community in Iowa.
What is the median household income in St. Marys?
The median household income in St. Marys, IA is $78,750 per year, which is 5% above the national median of $75,149.
What is the median home value in St. Marys?
The median home value in St. Marys, IA is $168,800, which is 31% below the national median of $244,900. The majority of housing units are owner-occupied.
What is the average rent in St. Marys?
The median monthly rent in St. Marys, IA is $1,300, which is 12% above the national average of $1,163/month.
What is the unemployment rate in St. Marys?
The unemployment rate in St. Marys, IA is 0.0%, compared to the national average of 3.7%. This lower-than-average rate suggests a relatively healthy local job market.
Is St. Marys, IA a good place to live?
St. Marys offers above-average incomes, affordable housing, and a strong job market. With a population of 112 and a median age of 53.5, the city appeals to established professionals and retirees.
How educated is St. Marys, IA?
23.2% of residents in St. Marys 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. Marys?
Key cost-of-living indicators for St. Marys, IA: median home value is $168,800 (31% below national), median rent is $1,300/month, and median household income is $78,750. The home-value-to-income ratio is 2.1x, indicating relatively affordable housing relative to local incomes.
What is the poverty rate in St. Marys?
The poverty rate in St. Marys, IA is 6.3%, compared to the national average of 12.4%. This below-average poverty rate reflects generally favorable economic conditions in the community.
How diverse is St. Marys, IA?
St. Marys's population is 0.0% White, 0.0% Hispanic or Latino, 0.0% Black or African American, 0.0% Asian, and 0.0% two or more races. 1.8% of residents are foreign-born.