Mascoutah, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Mascoutah, Illinois had a total population of 8,816, the 246th largest city in Illinois, with a median household income of $97,375, which is 17% higher than the state average. The poverty rate is 9.8%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Housing is very affordable with a home-value-to-income ratio of just 2.3x.
Mascoutah Quick Facts
How Mascoutah 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 | 8,743 | 8,816 | +0.8% |
| Median household income | $93,902 | $97,375 | +3.7% |
| Median home value | $226,300 | $224,900 | -0.6% |
How Mascoutah 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 less diverse community where one racial or ethnic group represents a large majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Mascoutah Rankings in Illinois
Explore Illinois Rankings
Other Cities in St. Clair County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Belleville | 41,370 | $63,535 | 14.6% | $141,300 |
| O'Fallon | 32,262 | $105,982 | 6.2% | $295,700 |
| East St. Louis | 17,999 | $35,700 | 32.8% | $52,600 |
| Fairview Heights | 16,745 | $80,930 | 8.8% | $177,700 |
| Swansea | 14,710 | $91,587 | 8.7% | $223,600 |
| Shiloh | 14,572 | $99,573 | 6.8% | $274,000 |
| Columbia | 11,127 | $107,606 | 5.4% | $293,000 |
| Freeburg | 4,592 | $92,065 | 6.7% | $241,200 |
| Lebanon | 4,474 | $88,750 | 14.8% | $170,700 |
| Caseyville | 4,130 | $60,669 | 14.3% | $96,800 |
Cities Similar to Mascoutah
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Manteno | 9,030 | $97,634 | $248,400 | 27.5% | 3.5% |
| Willowbrook | 9,131 | $99,239 | $358,600 | 53.1% | 6.6% |
| Savoy | 8,968 | $91,966 | $320,300 | 63.3% | 7.9% |
| Hampshire | 8,524 | $94,773 | $329,800 | 28.6% | 7.8% |
| Crete | 8,386 | $97,147 | $228,500 | 32.4% | 3.9% |
Population Overview
Mascoutah is a small city located in Illinois, within St. Clair County. The total population is 8,816. It ranks as the 246th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Mascoutah is 37.5 years. This is 4% lower than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Mascoutah is $97,375. This is 17% higher than the state median of $83,390. It is also 21% higher than the national median of $80,734. The poverty rate stands at 9.8%. This is 17% lower than the state poverty rate of 11.8%. The unemployment rate is 4.0%. This is 31% lower than the state rate of 5.8%. The median home value is $224,900. Housing costs are 15% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.3x, Mascoutah is one of the most affordable housing markets in the area. 69.7% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Mascoutah is White (non-Hispanic), making up 77.9% of the population. Hispanic or Latino residents account for 10.1%. The Black or African American population (2.8%) is well below the state average of 13.3%. The Asian population (2.2%) is well below the state average of 5.9%.
Education
30.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 19% lower than the state rate of 37.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.1%.
Data Sources & Methodology
All demographic data for Mascoutah, Illinois 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 Illinois state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,445 Census-designated places in Illinois. 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 Mascoutah, Illinois?
Mascoutah, Illinois has a population of 8,816 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Mascoutah, IL?
The median household income in Mascoutah is $97,375, which is 21% higher than the national median of $80,734.
What is the poverty rate in Mascoutah, IL?
The poverty rate in Mascoutah is 9.8%. This means approximately 848 residents live below the federal poverty line.
What is the racial makeup of Mascoutah, Illinois?
Mascoutah's population is 77.9% White, 2.8% Black, 10.1% Hispanic/Latino, and 2.2% Asian.
What is the median home value in Mascoutah, IL?
The median home value in Mascoutah is $224,900. The home-value-to-income ratio is 2.3x.
How educated is Mascoutah, Illinois?
30.8% of adults (25+) in Mascoutah hold a bachelor's degree or higher, and 12.8% hold a graduate or professional degree.