Westmont, Illinois Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Westmont, IL Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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A
Health Above average
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B
Income Around average
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A+
Education Top grade
Source: Map AI Methodology
Population
| Metric | Westmont | Illinois Avg | U.S. Average |
|---|---|---|---|
| Population | 23,509 | 12,692,444 | 337,468,954 |
| Population density (per sq mi) | 4575.9 | 219.1 | 86.4 |
| Population growth (%/yr) | 0.37% | -0.16% | 0.59% |
| Median age | 41.8 | 37.4 | 37.3 |
| Households | 9,701 | 5,035,584 | 130,235,071 |
Population in Westmont grew by 5.8% from 2009 to 2024, reaching 23,509 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Westmont is Millennials, aged 29–44, at 22.1% of residents. That is 0.2 points above Illinois as a whole.
- Gen Z 13–28 4,095 17.4% -3.8 pts
- Millennials 29–44 5,199 22.1% +0.2 pts
- Gen X 45–60 5,184 22.0% +1.7 pts
- Boomers 61–79 4,212 17.9% +1.0 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Illinois, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 52.4% of the people living in Westmont and men 47.6%.
- Women 52.4% Illinois 50.6%
- Men 47.6% Illinois 49.4%
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Economy
Westmont has a the economy index of B, which means it is quite prosperous.
| Metric | Westmont | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median household income | $103,949 | $84,042 | $80,455 |
| Income growth (%/yr) | 5.34% | 4.46% | 4.80% |
| Unemployment rate | 3.8% | 5.8% | 5.2% |
The median household income in Westmont is about 24% higher than in Illinois.
Housing
| Metric | Westmont | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median home price | $338,417 | $149,936 | $248,835 |
| Median rent | $1,532 | $1,274 | $1,407 |
| Homeownership rate | 68.0% | 67.1% | 65.2% |
The median home price in Westmont is about 18.4 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,532 per month for that long.
Commute Time & Mobility
Commuters in Westmont spend about 51 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 210 hours, about 8.8 full days, spent commuting.
| Metric | Westmont | Illinois Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 25.3 | 23.6 | 22.4 |
| Round-trip commute (min) | 50.5 | 47.3 | 44.8 |
| Yearly time spent (hours) | 210 | 197 | 187 |
| Estimated yearly cost | $6,524 | $6,104 | $5,790 |
| Work from home | 24.7% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | 16,592 | 7,977 | 8,813 |
| Local road traffic (vehicles/day) | 3,611 | 1,547 | 1,355 |
The average commute time in Westmont is 25 minutes, longer than the 24 minutes in Illinois.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Westmont has a education index of A+, which means it is exceptionally educated.
| Metric | Westmont | Illinois Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 53.4% | 34.1% | 31.6% |
| Average household size | 2.38 | 2.46 | 2.53 |
Health
Westmont has a health index of A, which means it is very healthy.
| Metric | Westmont | Illinois Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 81.1 | 77.9 | 78.3 |
| Self-rated poor health | 10.7% | 15.6% | 16.3% |
| Smokers | 12.3% | 19.2% | 19.0% |
Westmont, IL Compared With Nearby Cities
How Westmont, IL compares with the 1 cities closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Westmont, IL | 23,509 | $103,949 #2/2 | $338,417 #2/2 | 25.3 min #2/2 |
| Downers Grove, IL | 51,779 | $113,724 | $537,998 | 24.0 min |
Frequently Asked Questions
Common questions about Westmont, Illinois.
How big is Westmont, Illinois by population?
About 23,509 people live in Westmont, Illinois, in 9,701 households of 2.4 people on average. The median age is 41.8, so residents are older than the U.S. median of 37.3 by about 5 years.
Is Westmont, Illinois urban or rural?
Averaged over its land area, Westmont, Illinois has 4,576 people per square mile, a density typical of a city. That is about 53 times the U.S. average of 86.
Can a typical household afford a home in Westmont, Illinois?
The median home costs 3.3 times the median household income ($338,417 against $103,949), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $1,532 a month takes about 18% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
How strong is the job market in Westmont, Illinois?
Unemployment in Westmont, Illinois is only 3.8%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
How common is a college degree in Westmont, Illinois?
53.4% of adults in Westmont, Illinois hold a bachelor's degree or higher (about 5 in 10), well above the U.S. share of 31.6%.
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