DuPage County, Illinois Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
DuPage County, 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.
-
A
Health Above averageHealthiest county in Illinois
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A
Income Above averageAmong the top 3 wealthiest counties in Illinois
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A+
Education Top gradeBest educated county in Illinois
Source: Map AI Methodology
Population: density and quick facts
| Metric | DuPage County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Population | 929,812 | 12,692,444 | 337,468,954 |
| Population density (per sq mi) | 2765.7 | 219.1 | 86.4 |
| Population growth (%/yr) | -0.02% | -0.16% | 0.59% |
| Median age | 40.3 | 37.4 | 37.3 |
| Households | 350,662 | 5,035,584 | 130,235,071 |
Population in DuPage County grew by 0.5% from 2009 to 2024, reaching 929,812 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in DuPage County is Gen X, aged 45–60, at 21.8% of residents. That is 1.4 points above Illinois as a whole.
- Gen Z 13–28 185,988 20.0% -1.2 pts
- Millennials 29–44 202,708 21.8% on par
- Gen X 45–60 202,983 21.8% +1.4 pts
- Boomers 61–79 155,159 16.7% -0.2 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 50.7% of the people living in DuPage County and men 49.3%.
- Women 50.7% Illinois 50.6%
- Men 49.3% Illinois 49.4%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in DuPage County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
DuPage County has a the economy index of A, which means it is very prosperous.
| Metric | DuPage County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median household income | $112,172 | $84,042 | $80,455 |
| Income growth (%/yr) | 3.99% | 4.46% | 4.80% |
| Unemployment rate | 4.9% | 5.8% | 5.2% |
The median household income in DuPage County is about 33% higher than in Illinois.
Housing
| Metric | DuPage County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Median home price | $400,376 | $149,936 | $248,835 |
| Median rent | $1,688 | $1,274 | $1,407 |
| Homeownership rate | 73.1% | 67.1% | 65.2% |
The median home price in DuPage County is about 19.8 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,688 per month for that long.
Commute Time & Mobility
Commuters in DuPage County spend about 47 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 197 hours, about 8.2 full days, spent commuting.
| Metric | DuPage County | Illinois Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 23.6 | 23.6 | 22.4 |
| Round-trip commute (min) | 47.2 | 47.3 | 44.8 |
| Yearly time spent (hours) | 197 | 197 | 187 |
| Estimated yearly cost | $6,100 | $6,104 | $5,790 |
| Work from home | 21.5% | 15.9% | 15.0% |
| Highway traffic (vehicles/day) | 22,261 | 7,977 | 8,813 |
| Local road traffic (vehicles/day) | 3,995 | 1,547 | 1,355 |
Fastest commutes among counties in
Illinois:
Edgar County (12.0 min), Brown County (12.7 min), Morgan County (13.1 min).
Slowest:
Calhoun County (43.8 min), Pulaski County (31.2 min), Pope County (31.0 min).
The average commute time in DuPage County is about the same as 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
DuPage County has a education index of A+, which means it is exceptionally educated.
| Metric | DuPage County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 47.6% | 34.1% | 31.6% |
| Average household size | 2.61 | 2.46 | 2.53 |
Highest education index among counties in
Illinois:
DuPage County (0.4), Champaign County (0.4), Lake County (0.4).
Lowest:
Hardin County (0.2), Fayette County (0.2), Perry County (0.2).
Health
DuPage County has a health index of A, which means it is very healthy.
| Metric | DuPage County | Illinois Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 81.3 | 77.9 | 78.3 |
| Self-rated poor health | 10.2% | 15.6% | 16.3% |
| Smokers | 12.6% | 19.2% | 19.0% |
Highest health index among counties in
Illinois:
DuPage County (0.8), Champaign County (0.8), Monroe County (0.8).
Lowest:
Alexander County (0.8), Pulaski County (0.8), Gallatin County (0.8).
DuPage County, IL Compared With Nearby Counties
DuPage County, IL is the 2nd largest of the 6 counties compared here, 929,812 residents against a local median of 517,214. The measure that sets DuPage County, IL apart most is median home price: $400,376, 61% above the local median of $248,814.
Commute tells the same story from another angle: 23.6 min against a local median of 28.2 min, 16% below it. The one measure here that carries a verdict is commute, and at 16% below the local median it puts DuPage County, IL at the better end of the local range. The counties themselves spread $118,493 on median home price, so DuPage County, IL sits at one end of an already wide local range rather than apart from it. DuPage County, IL has the highest median home price of the 6 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| DuPage County, IL | 929,812 | $112,172 #1/6 | $400,376 #1/6 | 23.6 min #1/6 |
| Kane County, IL | 517,214 | $103,524 | $215,928 | 23.8 min |
| Will County, IL | 701,595 | $109,769 | $214,302 | 28.2 min |
| Kendall County, IL | 137,674 | $110,609 | $332,795 | 30.6 min |
| Cook County, IL | 5,180,889 | $84,208 | $248,814 | 30.6 min |
| McHenry County, IL | 312,591 | $105,514 | $263,961 | 26.8 min |
Frequently Asked Questions
Common questions about DuPage County, Illinois.
How big is DuPage County, Illinois by population?
About 929,812 people live in DuPage County, Illinois, in 350,662 households of 2.6 people on average. The median age is 40.3, so residents are older than the U.S. median of 37.3 by about 3 years.
Is DuPage County, Illinois mostly urban or rural?
Averaged over its land area, DuPage County, Illinois has 2,766 people per square mile, a density typical of urban and suburban areas. That is about 32 times the U.S. average of 86.
Is DuPage County, Illinois an affordable place to live?
The median home costs 3.6 times the median household income ($400,376 against $112,172), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $1,688 a month takes about 18% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
What share of adults in DuPage County, Illinois have a college degree?
47.6% of adults in DuPage County, Illinois hold a bachelor's degree or higher (about 1 in 2), well above the U.S. share of 31.6%.
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