St. Louis, Michigan Demographics & Population 2026
During the 2020–2024 ACS period, St. Louis, Michigan had a total population of 7,367, the 141st largest city in Michigan, with a median household income of $51,167, which is 30% lower than the state average. The poverty rate is 13.4%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Only 6.3% of adults have a bachelor's degree, well below the national average of 35.7%.
- Housing is very affordable with a home-value-to-income ratio of just 2.3x.
St. Louis Quick Facts
How St. Louis Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 6,926 | 7,367 | +6.4% |
| Median household income | $46,096 | $51,167 | +11.0% |
| Median home value | $115,700 | $119,200 | +3.0% |
How St. Louis Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A diverse community with significant representation from multiple racial and ethnic groups.
State average: 45 | National average: 61
Education
Educational Attainment (Adults 25+)
St. Louis Rankings in Michigan
Explore Michigan Rankings
Other Cities in Gratiot County
Cities Similar to St. Louis
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Fair Plain | 7,330 | $52,817 | $169,400 | 23.8% | 26.6% |
| Bridgeport | 6,884 | $51,071 | $98,800 | 9.7% | 23.8% |
| Hillsdale | 8,002 | $51,038 | $130,900 | 26.2% | 22.9% |
| Hastings | 7,520 | $58,286 | $174,500 | 25.4% | 12.5% |
| Ludington | 7,676 | $46,411 | $201,100 | 28.9% | 22.5% |
Population Overview
St. Louis is a small city located in Michigan, within Gratiot County. The total population is 7,367. It ranks as the 141st most populous out of 745 Census-designated places in Michigan.
Age Demographics
The median age in St. Louis is 37.5 years. This is 7% lower than the state median of 40.2 years. Only 10.8% of residents are under 18, indicating fewer families with children.
Economy, Income & Housing
The median household income in St. Louis is $51,167. This is 30% lower than the state median of $72,875. It is also 37% lower than the national median of $80,734. The poverty rate stands at 13.4%. This is 1% higher than the state poverty rate of 13.2%. The unemployment rate is 2.8%. This is 52% lower than the state rate of 5.7%. The median home value is $119,200. Housing costs are 49% lower than the state median of $231,600. With a home-value-to-income ratio of just 2.3x, St. Louis is one of the most affordable housing markets in the area. 67.3% of occupied housing units are owner-occupied. This homeownership rate is 8% lower than the state average of 73.2%.
Race & Ethnicity
The largest racial or ethnic group in St. Louis is White (non-Hispanic), making up 58.6% of the population. Black or African American residents account for 28.6%. The Black or African American population is significantly higher than the state average (28.6% vs 13.1%). The Asian population (0.1%) is well below the state average of 3.4%.
Education
6.3% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 80% lower than the state rate of 32.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 86.1%.
Data Sources & Methodology
All demographic data for St. Louis, Michigan is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Michigan state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 745 Census-designated places in Michigan. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of St. Louis, Michigan?
St. Louis, Michigan has a population of 7,367 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. Louis, MI?
The median household income in St. Louis is $51,167, which is 37% lower than the national median of $80,734.
What is the poverty rate in St. Louis, MI?
The poverty rate in St. Louis is 13.4%. This means approximately 450 residents live below the federal poverty line.
What is the racial makeup of St. Louis, Michigan?
St. Louis's population is 58.6% White, 28.6% Black, 8.4% Hispanic/Latino, and 0.1% Asian.
What is the median home value in St. Louis, MI?
The median home value in St. Louis is $119,200. The home-value-to-income ratio is 2.3x.
How educated is St. Louis, Michigan?
6.3% of adults (25+) in St. Louis hold a bachelor's degree or higher, and 2.9% hold a graduate or professional degree.