Westmont, Illinois Demographics & Population 2026
During the 2020–2024 ACS period, Westmont, Illinois had a total population of 23,724, the 98th largest village in Illinois, with a median household income of $88,090, which is 6% 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
- 50.1% of adults hold a bachelor's degree or higher — top 10% in Illinois.
Westmont Quick Facts
How Westmont 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 | 24,201 | 23,724 | -2.0% |
| Median household income | $83,622 | $88,090 | +5.3% |
| Median home value | $369,100 | $379,100 | +2.7% |
How Westmont 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 diverse community with significant representation from multiple racial and ethnic groups.
State average: 61 | National average: 61
Education
Educational Attainment (Adults 25+)
Westmont 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 Westmont
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Elmwood Park | 23,868 | $91,955 | $339,300 | 32.6% | 8.0% |
| Rolling Meadows | 24,027 | $98,514 | $326,200 | 43.7% | 8.5% |
| Villa Park | 22,345 | $95,015 | $329,000 | 36.3% | 4.7% |
| Yorkville | 23,617 | $108,513 | $335,300 | 37.9% | 3.3% |
| Lisle | 23,407 | $107,479 | $406,800 | 61.9% | 5.9% |
Population Overview
Westmont is a small city located in Illinois, within DuPage County. The total population is 23,724. It ranks as the 98th most populous out of 1,445 Census-designated places in Illinois.
Age Demographics
The median age in Westmont is 43.2 years. This is 11% higher than the state median of 39.0 years.
Economy, Income & Housing
The median household income in Westmont is $88,090. This is 6% higher than the state median of $83,390. It is also 9% 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 32% lower than the state rate of 5.8%. The median home value is $379,100. Housing costs are 44% higher than the state median of $263,300. The home-value-to-income ratio is 4.3x. 55.1% of occupied housing units are owner-occupied. This homeownership rate is 18% lower than the state average of 67.1%.
Race & Ethnicity
The largest racial or ethnic group in Westmont is White (non-Hispanic), making up 61.7% of the population. Asian residents account for 14.6%. The Black or African American population (5.9%) is well below the state average of 13.3%. The Asian population is significantly higher than the state average (14.6% vs 5.9%).
Education
50.1% of residents aged 25 and older hold a bachelor's degree or higher. This places Westmont in the top 10% of all cities in the state for educational attainment. This is 32% 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 95.2%. Notably, 21.2% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Westmont, 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 Westmont, Illinois?
Westmont, Illinois has a population of 23,724 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Westmont, IL?
The median household income in Westmont is $88,090, which is 9% higher than the national median of $80,734.
What is the poverty rate in Westmont, IL?
The poverty rate in Westmont is 9.8%. This means approximately 2,295 residents live below the federal poverty line.
What is the racial makeup of Westmont, Illinois?
Westmont's population is 61.7% White, 5.9% Black, 14.2% Hispanic/Latino, and 14.6% Asian.
What is the median home value in Westmont, IL?
The median home value in Westmont is $379,100. The home-value-to-income ratio is 4.3x.
How educated is Westmont, Illinois?
50.1% of adults (25+) in Westmont hold a bachelor's degree or higher, and 21.2% hold a graduate or professional degree.