Oak Brook, Illinois Population 2024

7,901

Oak Brook is a city located in DuPage County Illinois. Oak Brook has a 2024 population of 7,901. Oak Brook is currently declining at a rate of -0.78% annually and its population has decreased by -3.04% since the most recent census, which recorded a population of 8,149 in 2020.

The average household income in Oak Brook is $239,666 with a poverty rate of 6.67%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Oak Brook is 52.5 years, 54.2 years for males, and 50.5 years for females.

Oak Brook Demographics

According to the most recent ACS, the racial composition of Oak Brook was:

  • White: 62.91%
  • Asian: 29.4%
  • Two or more races: 5.85%
  • Black or African American: 1.09%
  • Other race: 0.74%
  • Native American: 0%
  • Native Hawaiian or Pacific Islander: 0%
Land Area (mi²)
8.0 sq mi
Density (mi²)
991.70/sq mi
Growth Since 2020
-3.04% (-248)
The current population of Oak Brook, Illinois is 7,901 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 8,149.

Oak Brook, Illinois Population 2024

Population by Race

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Race
Population
Percentage (of total)
White5,07462.91%
Asian2,37129.4%
Two or more races4725.85%
Black or African American881.09%
Other race600.74%
Native American00%
Native Hawaiian or Pacific Islander00%

White

Asian

Two or more races

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Oak Brook Population by Race

Oak Brook Population Pyramid 2024

Oak Brook Median Age

52.5

Total

54.2

Male

50.5

Female

Oak Brook Adults

There are 6,264 adults, (2,792 of whom are seniors) in Oak Brook.

Oak Brook Age Dependency

132.3

Age Dependency Ratio

80.4

Old Age Dependency Ratio

51.9

Child Dependency Ratio

Oak Brook Sex Ratio

Female4,31653.52%
Male3,74946.48%

Oak Brook Population by Age

Oak Brook Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All2,9832.6795.44.6
Married1,8193.2394.85.2
Non Family7061.0498.21.8
Female2462.5987.412.6
Male2123.411000

3.16

Average Family Size

2.67

Average Household Size

95.4%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Oak Brook Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Oak Brook Educational Attainment by Sex (over 25)

Oak Brook Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among other race people with a rate of 98.33%.

The highest rate of bachelors degrees is among other race people with a rate of 98.33%.

Oak Brook Educational Attainment by Race

All

Male

Female

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$124,783

Average Earnings

$147,344

Average Male

$85,085

Average Female

Oak Brook Earnings by Educational Attainment

Oak Brook Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Oak Brook Language

65.21% of Oak Brook residents speak only English, while 34.79% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 16.37% of the population.

Oak Brook Language

Oak Brook Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
Asian2,3712349.87%
White4,8542134.39%
Hispanic3928521.68%
Multiple4728518.01%

6.67%

Overall Poverty Rate

6.68%

Male Poverty Rate

6.67%

Female Poverty Rate

Poverty in Oak Brook

The race most likely to be in poverty in Oak Brook is Hispanic, with 21.68% below the poverty level.

The race least likely to be in poverty in Oak Brook is White, with 4.39% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0%. Among those working part-time, it was 1.38%, and for those that did not work, the poverty rate was 11.87%.

Oak Brook Poverty

rate

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Rate
Poverty
Bachelors or Greater6.53%
Less Than 9th Grade6.41%
Some College3.48%
High School0%

Oak Brook Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed37.68%
Male Unemployed3.91%
Female Employed1.11%
Male Employed0%

Oak Brook Poverty Rate by Employment Status and Sex

Oak Brook Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Oak Brook Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

58.3%

Overall Marriage Rate

60.3%

Male Marriage Rate

56.3%

Female Marriage Rate

Oak Brook Married by Age and Sex

male

female

Oak Brook Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Oak Brook Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Oak Brook Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

311

Number of Veterans

311

Male Veterans

0

Female Veterans

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Oak Brook Veterans by War

count

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Oak Brook Veterans by Age

count

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Oak Brook Veterans by Race

Oak Brook Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.92%

Veteran Poverty Rate

25.66%

Veteran Disability Rate

Oak Brook Veterans by Education

LaborForceParticipation

48%

Labor Force Participation

43%

Employment Rate

10.4%

Unemployment Rate

Oak Brook Employment by Age

LaborForceParticipation

Oak Brook Employment by Race

LaborForceParticipation

Oak Brook Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

58.61%

Born in Oak Brook

73.49%

Native Born

26.51%

Foreign Born

2.52%

Non Citizen

23.99%

Naturalized

Place of Birth

73.49% of Oak Brook residents were born in the United States, with 58.61% having been born in Illinois. 2.52% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Oak Brook Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20297,591-62-0.81%
20287,653-62-0.8%
20277,715-62-0.8%
20267,777-62-0.79%
20257,839-62-0.78%
20247,901-62-0.78%
20237,963-62-0.77%
20228,025-64-0.79%
20218,089-60-0.74%
20208,149700.87%
20198,079-59-0.72%
20188,138-12-0.15%
20178,150-7-0.09%
20168,157-8-0.1%
20158,165280.34%
20148,137310.38%
20138,106430.53%
20128,063340.42%
20118,029590.74%
20107,97000%
20008,702-476-5.19%
19909,1782,53738.2%
19806,6412,52361.27%
19704,118-3,473-45.75%

Oak Brook Population by Year