Willowbrook, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Willowbrook, Illinois had a total population of 9,131, the 239th largest village in Illinois, with a median household income of $99,239, which is 19% higher than the state average. The poverty rate is 6.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- 53.1% of adults hold a bachelor's degree or higher — top 10% in Illinois.
Willowbrook Quick Facts
How Willowbrook 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 | 9,138 | 9,131 | -0.1% |
| Median household income | $97,861 | $99,239 | +1.4% |
| Median home value | $367,000 | $358,600 | -2.3% |
How Willowbrook 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+)
Willowbrook 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 |
| St. Charles | 32,854 | $114,300 | 4.5% | $377,400 |
| Glendale Heights | 32,808 | $86,545 | 10.3% | $261,700 |
Cities Similar to Willowbrook
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% |
| Mascoutah | 8,816 | $97,375 | $224,900 | 30.8% | 9.8% |
| Savoy | 8,968 | $91,966 | $320,300 | 63.3% | 7.9% |
| Lynwood | 9,083 | $85,237 | $218,000 | 31.4% | 9.2% |
| Hampshire | 8,524 | $94,773 | $329,800 | 28.6% | 7.8% |
Population Overview
Willowbrook is a small city located in Illinois, within DuPage County. The total population is 9,131. It ranks as the 239th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Willowbrook is 45.0 years. This is 15% higher than the state median of 39.0 years. 12.5% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The median household income in Willowbrook is $99,239. This is 19% higher than the state median of $83,390. It is also 23% higher than the national median of $80,734. The poverty rate stands at 6.6%. This is 44% lower than the state poverty rate of 11.8%. The unemployment rate is 4.4%. This is 25% lower than the state rate of 5.8%. The median home value is $358,600. Housing costs are 36% higher than the state median of $263,300. The home-value-to-income ratio is 3.6x. 72.6% of occupied housing units are owner-occupied. This homeownership rate is 8% higher than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Willowbrook is White (non-Hispanic), making up 64.9% of the population. Asian residents account for 18.9%. The Black or African American population (3.7%) is well below the state average of 13.3%. The Asian population is significantly higher than the state average (18.9% vs 5.9%).
Education
53.1% of residents aged 25 and older hold a bachelor's degree or higher. This places Willowbrook in the top 10% of all cities in the state for educational attainment. This is 40% 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 96.0%. Notably, 27.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Willowbrook, 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.
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 Willowbrook, Illinois?
Willowbrook, Illinois has a population of 9,131 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Willowbrook, IL?
The median household income in Willowbrook is $99,239, which is 23% higher than the national median of $80,734.
What is the poverty rate in Willowbrook, IL?
The poverty rate in Willowbrook is 6.6%. This means approximately 591 residents live below the federal poverty line.
What is the racial makeup of Willowbrook, Illinois?
Willowbrook's population is 64.9% White, 3.7% Black, 9.7% Hispanic/Latino, and 18.9% Asian.
What is the median home value in Willowbrook, IL?
The median home value in Willowbrook is $358,600. The home-value-to-income ratio is 3.6x.
How educated is Willowbrook, Illinois?
53.1% of adults (25+) in Willowbrook hold a bachelor's degree or higher, and 27.1% hold a graduate or professional degree.