St. Marys, IA
Population 112 · Iowa
About St. Marys, IA
St. Marys is a small community in Iowa with a population of 112 residents. The median household income is $78,750 per year, which is above the national average. The median age in St. Marys is 53.5 years.
Housing in St. Marys has a median home value of $168,800 and median monthly rent of $1,300. Of the 52 total housing units, the majority are owner-occupied, with 40 owner-occupied and 12 renter-occupied units.
The unemployment rate in St. Marys is 0.0% and the poverty rate is 6.3%. 23.2% of residents hold a bachelor's degree or higher. The average commute time is 28.2 minutes.
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.
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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 Census data.
What is the median household income in St. Marys?
The median household income in St. Marys, IA is $78,750 per year.
What is the median home value in St. Marys?
The median home value in St. Marys, IA is $168,800.
What is the average rent in St. Marys?
The median monthly rent in St. Marys, IA is $1,300.
What is the unemployment rate in St. Marys?
The unemployment rate in St. Marys, IA is 0.0%.