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CITY

Oak Brook

Illinois · 8,108 residents (2025 est.) · 7.976 sq mi
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Notable rankings
#170Oldest by median ageof 6,82655.2#287Highest median household incomeof 6,818$175,870
The short version

Oak Brook is significantly wealthier than the US average, with a median household income of $175,870. Population has declined 7% since 2000. 66% of adults hold a bachelor's degree or higher, well above the national rate of 36%. Median home value has risen by half since 2000, reaching $903,200. With a median age of 55.2, the population is older than the US median of 38.9. It ranks in the top 1% of US cities for household income.

At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 55.2
US median: 38.9
More educated
66% hold a bachelor's degree
US average: 36%
More affordable
home values down 16%, inflation adjusted
US median home: $376,019
Section 01

Population & growth

Total population
8,056
−7%since 2000
from 8,702 in 2000
1990 – 2025
Population density
1,010 / sq mi
−8%since 2009
from 1,094 / sq mi in 2009
US average: 281
Median age
55.2
+10%since 2000
from 50.0 in 2000
US average: 38.9

PEP 2025 EST:8,108 residents (Census Bureau Vintage 2025, released March 2026)

Population, 1990 – 2024
8K8K9K9K9K1990201020202024Oak Brook
20248K
1990201020202024
Age distribution, 2024
Under 52.5%(205)
US avg: 5.6%
5 to 94.5%(360)
US avg: 6%
10 to 147.5%(605)
US avg: 6.4%
15 to 194.8%(383)
US avg: 6.6%
20 to 246%(484)
US avg: 6.5%
25 to 344.1%(330)
US avg: 13.7%
35 to 448.6%(696)
US avg: 13.2%
45 to 5411.6%(936)
US avg: 12.2%
55 to 6416.3%(1,311)
US avg: 12.7%
65 to 7412.8%(1,029)
US avg: 10.2%
75 to 8416.2%(1,304)
US avg: 5.1%
85 and over5.1%(413)
US avg: 1.9%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$175,870
−34%inflation adjusted, since 2000
from $146,537 in 2000
US average: $82,259
1990 – 2024
Per capita income
$104,806
+37%since 2000
from $76,668 in 2000
US average: $44,673
Households earning $100K+
76.1%
+3.3 ptssince 2009
from 72.9% in 2009
US average: 53.3%
Poverty rate
6.6%
+4.6 ptssince 2000
from 2.1% in 2000
US average: 12.5%
Income inequality (Gini)
0.540
+4%since 2010
from 0.518 in 2010
US average: 0.476
Workforce by industry, 2024
Retail trade13.1%
US avg: 9.9%
Other services11.8%
US avg: 6.7%
Public administration9.2%
US avg: 4.8%
Information5.5%
US avg: 10.8%
Finance & insurance4.2%
US avg: 5.9%
Professional, scientific, technical2.9%
US avg: 5.1%
Transportation & warehousing2.5%
US avg: 2.2%
Agriculture, forestry, fishing2%
US avg: 1.6%
Wholesale trade1.5%
US avg: 6.9%
Construction1.3%
US avg: 1.2%
Education & health services1.3%
US avg: 0.9%
Arts, entertainment, food0.8%
US avg: 1.9%
Manufacturing0.7%
US avg: 0.4%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03

Housing

Median home value
$903,200
−16%inflation adjusted, since 2000
from $588,200 in 2000
US average: $376,019
1990 – 2024
Median gross rent
$2,590
+43%inflation adjusted, since 2000
from $996 in 2000
US average: $1,442
Owner-occupied
91.1%
−5.8 ptssince 2000
from 97.0% in 2000
8.9% rent
Vacancy rate
9.2%
+2.8 ptssince 2009
from 6.5% in 2009
US average: 10.0%
Owner cost-burdened
29.9%
−4.9 ptssince 2009
from 34.9% in 2009
US average: 22.9%
Renter cost-burdened
31.3%
+10.4 ptssince 2009
from 20.8% in 2009
US average: 47.4%
Afford Score
5.1
−17%since 2009
from 6.2 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
Gentrification Score
36
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Oak Brook on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic74.5%(6,480)
Black1.4%(119)
Hispanic / Latino2.4%(208)
Asian20.1%(1,750)
Other0%
2024
White, non-Hispanic59.3%(4,775)
Black0.3%(26)
Hispanic / Latino5.7%(463)
Asian32.7%(2,637)
Other1.9%(155)
Diversity Score
67
+19%since 2009
from 57 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins

Detailed origins & ancestry

Hispanic origin
Puerto Rican1.5%(120)
Argentine1.1%(89)
Cuban0.9%(74)
Mexican0.9%(69)
Spaniard0.8%(63)
Bolivian0.1%(12)
Asian origin
Asian Indian17.4%(1,401)
Chinese6%(487)
Pakistani3.5%(279)
Uzbek1.4%(113)
Korean0.7%(54)
Filipino0.6%(48)
Taiwanese0.3%(26)
Malaysian0.3%(25)
Japanese0.3%(23)
Ancestry
Irish12.3%(992)
Italian10.2%(818)
Arab8.4%(677)
German7.4%(594)
Polish4.9%(392)
American3.7%(302)
Palestinian3.5%(281)
English3.5%(280)
Czech2.6%(207)
Greek2.4%(197)
Scottish2.4%(193)
Egyptian1.4%(111)
+ 23 more ancestry groups with data
French1.3%(103)
Swedish1%(80)
Syrian0.9%(70)
Iranian0.9%(70)
Russian0.6%(45)
Iraqi0.5%(44)
Norwegian0.5%(43)
Slovene0.5%(38)
Ukrainian0.4%(35)
Scotch-Irish0.4%(34)
Lithuanian0.4%(32)
Moroccan0.3%(23)
Danish0.3%(23)
Austrian0.2%(16)
Slovak0.2%(13)
Bulgarian0.1%(11)
Dutch0.1%(11)
Latvian0.1%(11)
Swiss0.1%(11)
Hungarian0.1%(10)
Nigerian0.1%(8)
RANKED:Largest Asian Indian population · Largest Irish population · Largest Italian population · Largest Arab population · Largest German population
Section 05

Education

Bachelor's degree or higher
66.4%
+5.6 ptssince 2000
from 60.7% in 2000
US average: 35.6%
High school or higher
96.9%
+0.9 ptssince 2000
from 96.0% in 2000
US average: 89.6%
Graduate degree
34.3%
−0.5 ptssince 2000
from 34.9% in 2000
US average: 14.0%
Section 06

Commute & transportation

Average commute
31.5 min
+50%since 2000
from 21.0 min in 2000
US average: 26.5
Drive alone to work
69.8%
−4.1 ptssince 2009
from 73.9% in 2009
US average: 68.9%
Carpooled to work
5.2%
−3.9 ptssince 2009
from 9.0% in 2009
US average: 8.5%
Public transit
2.5%
−1.9 ptssince 2009
from 4.4% in 2009
US average: 3.2%
Worked from home
20.9%
+11.5 ptssince 2009
from 9.4% in 2009
US average: 15.0%
Walked to work
1.6%
−1.0 ptssince 2009
from 2.6% in 2009
US average: 2.4%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.4%
No vehicle available
5.0%
+3.6 ptssince 2009
from 1.4% in 2009
US average: 8.3%
Section 07

Work & employment

Unemployment rate
10.0%
+5.3 ptssince 2011
from 4.7% in 2011
US average: 5.2%
Labor force participation
47.5%
−3.8 ptssince 2011
from 51.3% in 2011
US average: 63.5%
Self-employed
9.5%
+0.6 ptssince 2009
from 8.9% in 2009
US average: 13.1%
Management & professional
73.9%
−3.0 ptssince 2009
from 76.9% in 2009
US average: 42.5%
Section 08

People & community

Male
47.9%
−3.4 ptssince 2009
from 51.4% in 2009
Female
52.1%
+3.4 ptssince 2009
from 48.6% in 2009
Foreign born
30.0%
+4.1 ptssince 2009
from 25.9% in 2009
US average: 14.1%
Veterans
3.9%
−47.1 ptssince 2009
from 50.9% in 2009
US average: 6.2%
With a disability
13.4%
+3.4 ptssince 2012
from 10.0% in 2012
US average: 13.3%
Uninsured
0.6%
−97.5 ptssince 2013
from 98.1% in 2013
US average: 8.4%
Broadband at home
90.6%
+6.1 ptssince 2017
from 84.5% in 2017
US average: 91.0%
English only at home
66.8%
−4.7 ptssince 2016
from 71.5% in 2016
US average: 77.7%
Spanish at home
2.4%
Unchangedsince 2016
from 2.4% in 2016
US average: 13.6%
Marital status
Men 15+
Never married23.7%(811)
Married59.8%(2,042)
Widowed10.4%(354)
Divorced6.1%(210)
Women 15+
Never married22.1%(766)
Married60.4%(2,094)
Widowed12.3%(428)
Divorced5.2%(181)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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OAK BROOK VS
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OAK BROOK VS
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Frequently asked

How many people live in Oak Brook, Illinois?

Oak Brook, Illinois has about 8,056 residents according to the 2024 American Community Survey.

What is the median household income in Oak Brook, Illinois?

The typical household in Oak Brook, Illinois earns about $175,870 a year. Half of households make more than that, and half make less.

Is Oak Brook, Illinois expensive?

In Oak Brook, Illinois, the median home is worth about $903,200, and the typical rent is about $2,590 a month.

How educated are people in Oak Brook, Illinois?

About 66.4% of adults age 25 and over in Oak Brook, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Oak Brook, Illinois?

About 6.6% of people in Oak Brook, Illinois live below the federal poverty line.

Has Oak Brook, Illinois grown since 1990?

Yes, Oak Brook, Illinois has shrunk since 1990. The population has lost about 1,122 residents, a change of about -12 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →