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CITY · 2020 ACS

Oak Brook

Illinois · 8,163 residents · 7.976 sq mi
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The short version

Oak Brook is significantly wealthier than the US average, with a median household income of $140,743. Population has declined 6% since 2000. 66% of adults hold a bachelor's degree or higher, well above the national rate of 33%. Median home value is $770,700. With a median age of 55.1, the population is older than the US median of 38.8. Households here earn about 106% more than the Illinois median.

At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 55.1
US median: 38.8
More educated
66% hold a bachelor's degree
US average: 33%
More affordable
home values down 13%, inflation adjusted
US median home: $265,253
Section 01

Population & growth

Total population
8,163
−6%since 2000
from 8,702 in 2000
1990 – 2025
Population density
1,023 / sq mi
−6%since 2000
from 1,091 / sq mi in 2000
US average: 280
Median age
55.1
+10%since 2000
from 50.0 in 2000
US average: 38.8
Population, 1990 – 2024
8K8K9K9K9K1990201020202024Oak Brook
20248K
1990201020202024
Section 02

Income & economy

Median household income
$140,743
−36%inflation adjusted, since 2000
from $146,537 in 2000
US average: $66,278
1990 – 2024
Per capita income
$79,838
+4%since 2000
from $76,668 in 2000
US average: $35,364
Households earning $100K+
72.3%
−0.6 ptssince 2009
from 72.9% in 2009
US average: 43.9%
Poverty rate
4.2%
+2.1 ptssince 2000
from 2.1% in 2000
US average: 12.8%
Workforce by industry, 2020
Other services11.4%
US avg: 6.6%
Information11.2%
US avg: 11.1%
Retail trade7.9%
US avg: 10%
Public administration7.2%
US avg: 4.7%
Transportation & warehousing4.3%
US avg: 2.5%
Finance & insurance2.6%
US avg: 5.5%
Professional, scientific, technical1.6%
US avg: 4.7%
Wholesale trade1.4%
US avg: 6.7%
Arts, entertainment, food1.4%
US avg: 2%
Education & health services1%
US avg: 0.8%
Agriculture, forestry, fishing0%
US avg: 1.7%
Construction0%
US avg: 1.2%
Manufacturing0%
US avg: 0.5%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$770,700
−13%inflation adjusted, since 2000
from $588,200 in 2000
US average: $265,253
1990 – 2024
Owner-occupied
95.0%
−2.0 ptssince 2000
from 97.0% in 2000
5.0% rent
Afford Score
5.5
+36%since 2000
from 4.0 in 2000
1990 – 2024
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%
Diversity Score48%(4,176)
2020
White, non-Hispanic56.9%(4,648)
Black1.8%(149)
Hispanic / Latino4.9%(396)
Asian32.8%(2,678)
Other2.6%(214)
Diversity Score69.5%(5,677)
Diversity Score
70
+45%since 2000
from 48 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
66.0%
+5.3 ptssince 2000
from 60.7% in 2000
US average: 32.9%
High school or higher
97.4%
+1.3 ptssince 2000
from 96.0% in 2000
US average: 88.5%
Graduate degree
30.7%
−4.2 ptssince 2000
from 34.9% in 2000
US average: 12.7%
Section 06

Commute & transportation

Average commute
29.5 min
+41%since 2000
from 21.0 min in 2000
US average: 26.9
Drive alone to work
75.6%
+1.7 ptssince 2009
from 73.9% in 2009
US average: 75.1%
No vehicle available
5.7%
+4.3 ptssince 2009
from 1.4% in 2009
US average: 8.4%
Section 07

Work & employment

Unemployment rate
9.6%
+4.9 ptssince 2011
from 4.7% in 2011
US average: 5.4%
Labor force participation
47.5%
−3.8 ptssince 2011
from 51.3% in 2011
US average: 63.4%
Management & professional
70.9%
−5.9 ptssince 2009
from 76.9% in 2009
US average: 39.3%
Section 08

People & community

Male
46.2%
−5.1 ptssince 2009
from 51.4% in 2009
Female
53.8%
+5.1 ptssince 2009
from 48.6% in 2009
Foreign born
26.7%
+0.8 ptssince 2009
from 25.9% in 2009
US average: 13.5%
Uninsured
2.1%
−96.0 ptssince 2013
from 98.1% in 2013
US average: 8.8%
Drill deeper

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Compare Oak Brook to nearby cities

OAK BROOK VS
Clarendon Hills
Income$130,388−7%
Home value$605,800−21%
Population8,681+7%
SEE FULL COMPARISON →
OAK BROOK VS
Hinsdale
Income$250,001+78%
Home value$1,053,700+37%
Population17,573+117%
SEE FULL COMPARISON →
OAK BROOK VS
Westmont
Income$88,090−37%
Home value$379,100−51%
Population24,155+198%
SEE FULL COMPARISON →
OAK BROOK VS
Westchester
Income$98,954−30%
Home value$327,300−58%
Population16,300+101%
SEE FULL COMPARISON →
Frequently asked

How many people live in Oak Brook, Illinois?

Oak Brook, Illinois has about 8,163 residents according to the 2020 American Community Survey.

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

The typical household in Oak Brook, Illinois earns about $140,743 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 $770,700.

How educated are people in Oak Brook, Illinois?

About 66.0% 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 4.2% 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 1,015 residents, a change of about -11 percent over that period.

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

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