Marseilles, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Marseilles, Illinois had a total population of 4,279, the 364th largest city in Illinois, with a median household income of $58,217, which is 30% lower than the state average. The poverty rate is 21.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 30% below the state average, indicating significant economic challenges.
- Housing is very affordable with a home-value-to-income ratio of just 2.4x.
Marseilles Quick Facts
How Marseilles 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 | 4,071 | 4,279 | +5.1% |
| Median household income | $56,777 | $58,217 | +2.5% |
| Median home value | $119,100 | $142,500 | +19.6% |
How Marseilles 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+)
Marseilles Rankings in Illinois
Explore Illinois Rankings
Other Cities in LaSalle County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Ottawa | 18,447 | $71,413 | 17.3% | $154,000 |
| Streator | 12,330 | $57,609 | 20.3% | $94,700 |
| Peru | 9,775 | $74,808 | 9.0% | $154,300 |
| LaSalle | 9,498 | $57,732 | 18.8% | $113,500 |
| Mendota | 6,994 | $51,632 | 14.1% | $134,100 |
| Lake Holiday | 5,641 | $107,875 | 2.9% | $256,400 |
| Oglesby | 3,570 | $76,189 | 9.6% | $139,700 |
| Sheridan | 2,519 | $85,250 | 10.9% | $186,400 |
| Seneca | 2,450 | $86,830 | 22.2% | $227,500 |
| Earlville | 1,942 | $63,553 | 16.5% | $142,200 |
Cities Similar to Marseilles
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Staunton | 4,298 | $57,904 | $143,500 | 23.2% | 14.5% |
| Hometown | 4,215 | $61,101 | $173,400 | 16.4% | 6.9% |
| Caseyville | 4,130 | $60,669 | $96,800 | 11.5% | 14.3% |
| Sullivan | 4,348 | $63,229 | $102,500 | 15.9% | 10.3% |
| Pittsfield | 4,420 | $54,643 | $111,400 | 22.3% | 17.9% |
Population Overview
Marseilles is a small community located in Illinois, within LaSalle County. The total population is 4,279. It ranks as the 364th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Marseilles is 41.4 years. This is 6% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Marseilles is $58,217. This is 30% lower than the state median of $83,390. It is also 28% lower than the national median of $80,734. The poverty rate stands at 21.5%. This is 82% higher than the state poverty rate of 11.8%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 7.5%. This is 28% higher than the state rate of 5.8%. The median home value is $142,500. Housing costs are 46% lower than the state median of $263,300. With a home-value-to-income ratio of just 2.4x, Marseilles is one of the most affordable housing markets in the area. 68.5% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 67.1%.
Race & Ethnicity
Marseilles has a predominantly White (non-Hispanic) population, comprising 85.6% of all residents. Hispanic or Latino residents account for 5.1%. The Hispanic or Latino population (5.1%) is well below the state average of 18.8%.
Education
23.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 37% 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 95.2%.
Data Sources & Methodology
All demographic data for Marseilles, 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 Marseilles, Illinois?
Marseilles, Illinois has a population of 4,279 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Marseilles, IL?
The median household income in Marseilles is $58,217, which is 28% lower than the national median of $80,734.
What is the poverty rate in Marseilles, IL?
The poverty rate in Marseilles is 21.5%. This means approximately 898 residents live below the federal poverty line.
What is the racial makeup of Marseilles, Illinois?
Marseilles's population is 85.6% White, 0.0% Black, 5.1% Hispanic/Latino, and 3.9% Asian.
What is the median home value in Marseilles, IL?
The median home value in Marseilles is $142,500. The home-value-to-income ratio is 2.4x.
How educated is Marseilles, Illinois?
23.9% of adults (25+) in Marseilles hold a bachelor's degree or higher, and 8.0% hold a graduate or professional degree.