United States › Illinois › Oak Brook CITY · 2000 CENSUS
Oak Brook Illinois · 8,702 residents · 7.98 sq mi
Time machine
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The short version
Oak Brook is home to 8,702 people in Illinois. Households here earn about 215% more than in Illinois as a whole. At a median age of 50.0, this is an older place than the country as a whole. The median household earns $146,537, about 244% above the national median. 61% of adults hold a bachelor's degree, against 24% nationally. Median home value sits at $588,200.
At a glance
Wealthier
above the US median
US median: $42,589
Older
median age 50.0
US median: 35.2
More educated
61% hold a bachelor's degree
US average: 24%
More affordable
home values down 7%, inflation adjusted
US median home: $120,530
Section 01
Population & growth from 42.2 in 1990
US average: 35.2
Population, 1990 – 2024
8K 8K 9K 9K 9K 1990 2000 2010 2020 2024 Oak Brook Age distribution, 2000
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $146,537
+1%inflation adjusted, since 1990
from $110,331 in 1990
US average: $42,589
from $60,347 in 1990
US average: $21,522
from 2.7% in 1990
US average: 12.4%
$588,200
−7%inflation adjusted, since 1990
from $480,300 in 1990
US average: $120,530
$996
+17%inflation adjusted, since 1990
from $646 in 1990
US average: $602
from 95.8% in 1990
3.0% rent
Section 04
Race & ethnicity 1990
White, non-Hispanic 81.2%(7,457)
Hispanic / Latino 1.7%(157)
2000
White, non-Hispanic 74.5%(6,480)
Hispanic / Latino 2.4%(208)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Detailed origin tables are available for 2024; showing 2024 data.
Ancestry
+ 23 more ancestry groups with data from 52.0% in 1990
US average: 24.4%
High school or higher
from 94.6% in 1990
US average: 80.3%
from 26.8% in 1990
US average: 8.8%
Section 06
Commute & transportation from 26.1 min in 1990
US average: 17.6
Section 07
Work & employment No data for the years selected.
Section 08
People & community No data for the years selected.
Marital status
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 1.9% in 2013
US average: 8.4%
from 61.1% in 2020
US average: 54.8%
Direct-purchase
from 25.6% in 2020
US average: 13.8%
from 34.4% in 2020
US average: 18.4%
from 4.0% in 2020
US average: 20.9%
VA health care
from 1.3% in 2020
US average: 2.2%
Any private
from 81.1% in 2020
US average: 67.1%
Any public
from 37.6% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 3.9%(10)
Share of the 257 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
Places similar to Oak Brook Head to head
Compare Oak Brook to nearby cities OAK BROOK VS
Clarendon Hills
Income $130,388 −11%
Home value $605,800 +3%
Population 8,681 +7%
SEE FULL COMPARISON →
OAK BROOK VS
Hinsdale
Income $250,001 +71%
Home value $1,053,700 +79%
Population 17,573 +117%
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OAK BROOK VS
Westmont
Income $88,090 −40%
Home value $379,100 −36%
Population 24,155 +198%
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OAK BROOK VS
Westchester
Income $98,954 −32%
Home value $327,300 −44%
Population 16,300 +101%
SEE FULL COMPARISON →
Frequently asked
How many people live in Oak Brook, Illinois? Oak Brook, Illinois has about 8,702 residents according to the 2000 Census.
What is the median household income in Oak Brook, Illinois? The typical household in Oak Brook, Illinois earns about $146,537 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 $588,200, and the typical rent is about $996 a month.
How educated are people in Oak Brook, Illinois? About 60.7% 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 2.1% 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 476 residents, a change of about -5 percent over that period.
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