St. Charles city, Illinois Demographics & Population 2026
As of 2026, St. Charles city, Illinois has a total population of 32,733, the 57th largest city in Illinois, with a median household income of $115,350, which is 41% higher than the state average. The poverty rate is 3.9%.
Key Takeaways
- Household income is 41% above the state average — one of the wealthiest communities in Illinois.
- An exceptionally low poverty rate of 3.9% — among the lowest in Illinois.
- 51.2% of adults hold a bachelor's degree or higher — top 10% in Illinois.
St. Charles city Quick Facts
How St. Charles city Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 60 | National average: 60
Education
Educational Attainment (Adults 25+)
St. Charles city Rankings in Illinois
Explore Illinois Rankings
Cities Similar to St. Charles city
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Mundelein village | 31,632 | $107,608 | $285,600 | 42.9% | 8.5% |
| O'Fallon city | 32,139 | $102,793 | $274,100 | 51.2% | 4.4% |
| Gurnee village | 30,486 | $121,410 | $331,100 | 54.4% | 5.5% |
| Oswego village | 35,463 | $119,881 | $319,000 | 43.5% | 2.3% |
| Elk Grove Village village | 32,132 | $95,216 | $334,400 | 40.9% | 6.9% |
Population Overview
St. Charles city is a mid-sized community located in Illinois. The total population is 32,733. It ranks as the 57th most populous out of 1,445 cities and towns in Illinois.
Age Demographics
The median age in St. Charles city is 41.6 years. This is 7% higher than the state median of 38.9 years.
Economy, Income & Housing
The median household income in St. Charles city is $115,350. This is 41% higher than the state median of $81,702. Compared to the national median of $78,538, household income here is 47% higher. The poverty rate stands at 3.9%. This is 67% lower than the state poverty rate of 11.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 4.6%. This is 21% lower than the state rate of 5.8%. The median home value is $369,700. Housing costs are 48% higher than the state median of $250,500. The home-value-to-income ratio is 3.2x. 70.3% of occupied housing units are owner-occupied. This homeownership rate is 5% higher than the state average of 66.8%.
Race & Ethnicity
The largest racial or ethnic group in St. Charles city is White (non-Hispanic), making up 75.8% of the population. Hispanic or Latino residents account for 11.9%. The Black or African American population (3.1%) is well below the state average of 13.6%.
Education
51.2% of residents aged 25 and older hold a bachelor's degree or higher. This places St. Charles city in the top 10% of all cities in the state for educational attainment. This is 38% higher than the state rate of 37.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.8%. Notably, 20.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for St. Charles city, Illinois is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. 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. For official data, visit data.census.gov.
Free data download: Get all Illinois city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of St. Charles city, Illinois?
St. Charles city, Illinois has a population of 32,733 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. Charles city, IL?
The median household income in St. Charles city is $115,350, which is 47% higher the national median of $78,538.
What is the poverty rate in St. Charles city, IL?
The poverty rate in St. Charles city is 3.9%. This means approximately 1,256 residents live below the federal poverty line.
What is the racial makeup of St. Charles city, Illinois?
St. Charles city's population is 75.8% White, 3.1% Black, 11.9% Hispanic/Latino, and 4.8% Asian.
What is the median home value in St. Charles city, IL?
The median home value in St. Charles city is $369,700. The home-value-to-income ratio is 3.2x.
How educated is St. Charles city, Illinois?
51.2% of adults (25+) in St. Charles city hold a bachelor's degree or higher, and 20.8% hold a graduate or professional degree.