St. Charles, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, St. Charles, Illinois had a total population of 32,854, the 56th largest city in Illinois, with a median household income of $114,300, which is 37% higher than the state average. The poverty rate is 4.5%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 37% above the state average — one of the wealthiest communities in Illinois.
- An exceptionally low poverty rate of 4.5% — among the lowest in Illinois.
- 52.0% of adults hold a bachelor's degree or higher — top 10% in Illinois.
St. Charles Quick Facts
How St. Charles 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 | 32,733 | 32,854 | +0.4% |
| Median household income | $115,350 | $114,300 | -0.9% |
| Median home value | $369,700 | $377,400 | +2.1% |
How St. Charles 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
Moderate diversity with one or two groups making up the majority.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
St. Charles Rankings in Illinois
Explore Illinois Rankings
Other Cities in DuPage County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Aurora | 179,898 | $93,633 | 9.5% | $274,800 |
| Naperville | 150,692 | $155,105 | 4.5% | $540,200 |
| Bolingbrook | 74,096 | $108,400 | 9.2% | $314,700 |
| Wheaton | 53,557 | $120,008 | 5.6% | $455,700 |
| Downers Grove | 50,054 | $115,114 | 5.5% | $449,800 |
| Lombard | 43,619 | $100,362 | 7.2% | $335,700 |
| Carol Stream | 39,460 | $102,309 | 6.4% | $335,000 |
| Addison | 35,489 | $90,431 | 8.7% | $341,300 |
| Glendale Heights | 32,808 | $86,545 | 10.3% | $261,700 |
| Glen Ellyn | 28,390 | $140,938 | 6.3% | $544,000 |
Cities Similar to St. Charles
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Mundelein | 31,915 | $108,340 | $309,700 | 46.0% | 8.2% |
| O'Fallon | 32,262 | $105,982 | $295,700 | 52.4% | 6.2% |
| Woodridge | 33,941 | $101,000 | $363,700 | 46.5% | 5.5% |
| Gurnee | 30,510 | $119,628 | $344,300 | 56.7% | 5.2% |
| Elk Grove Village | 31,987 | $94,175 | $347,100 | 41.2% | 7.9% |
Population Overview
St. Charles is a mid-sized community located in Illinois, within DuPage County. The total population is 32,854. It ranks as the 56th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in St. Charles is 41.5 years. This is 6% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in St. Charles is $114,300. This is 37% higher than the state median of $83,390. It is also 42% higher than the national median of $80,734. The poverty rate stands at 4.5%. This is 62% lower than the state poverty rate of 11.8%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.1%. This is 29% lower than the state rate of 5.8%. The median home value is $377,400. Housing costs are 43% higher than the state median of $263,300. The home-value-to-income ratio is 3.3x. 70.3% of occupied housing units are owner-occupied. This homeownership rate is 5% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in St. Charles is White (non-Hispanic), making up 74.7% of the population. Hispanic or Latino residents account for 12.3%. The Black or African American population (2.9%) is well below the state average of 13.3%.
Education
52.0% of residents aged 25 and older hold a bachelor's degree or higher. This places St. Charles in the top 10% of all cities in the state for educational attainment. This is 37% higher 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 94.0%. Notably, 20.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for St. Charles, 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 St. Charles, Illinois?
St. Charles, Illinois has a population of 32,854 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. Charles, IL?
The median household income in St. Charles is $114,300, which is 42% higher than the national median of $80,734.
What is the poverty rate in St. Charles, IL?
The poverty rate in St. Charles is 4.5%. This means approximately 1,435 residents live below the federal poverty line.
What is the racial makeup of St. Charles, Illinois?
St. Charles's population is 74.7% White, 2.9% Black, 12.3% Hispanic/Latino, and 4.9% Asian.
What is the median home value in St. Charles, IL?
The median home value in St. Charles is $377,400. The home-value-to-income ratio is 3.3x.
How educated is St. Charles, Illinois?
52.0% of adults (25+) in St. Charles hold a bachelor's degree or higher, and 20.4% hold a graduate or professional degree.