Oak Brook, IL demographics:
population, income, and more

Total population
8,056
0.3% year-over-year change
Median household income
$175,870/yr
2.8% year-over-year change
Housing units
3,373
7.0% year-over-year change

Oak Brook population

How many people live in Oak Brook

Oak Brook is home to 8,056 residents, according to the most recent Census data. Gender-wise, 47.9% of Oak Brook locals are male, and 52.1% are female.

Total population
8,056
0.3% year-over-year change
Gender ratio
Male
47.9%
3,861
Female
52.1%
4,195
Value Percent YoY change
Male 3,861 47.9% 3.3%
Female 4,195 52.1% -2.2%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Oak Brook is 55, with the population distributed as follows: about 14.5% are children under 15, then 10.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 12.7% of the population, while another 27.9% fall into the 45 to 64 bracket. Finally, around 34.1% are 65 or older.

Median age
55.2
Age breakdown
Under 15
14.5%
15 to 24
10.8%
25 to 44
12.7%
45 to 64
27.9%
Over 65
34.1%
Value Percent YoY change
Under 15 1,170 14.5% -18.6%
15 to 24 867 10.8% 1.6%
25 to 44 1,026 12.7% -19.6%
45 to 64 2,247 27.9% 10.4%
Over 65 2,746 34.1% 13.2%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Oak Brook, 68.8% of the population are US-born citizens, while 27.7% have gained naturalized citizenship. At the same time, 3.6% of residents are non-citizens. As for race, 59.5% of locals are Caucasian, 0.3% are African American and 33.1% have Asian roots. There’s also a share of 6.5% that includes residents with two or more races.

Citizenship
U.S.-born citizens
68.8%
Non-U.S.-born citizens
27.7%
Non-citizens
3.6%
Value Percent YoY change
U.S.-born citizens 5,540 68.8% -2.8%
Non-U.S.-born citizens 2,230 27.7% 5.0%
Non-citizens 286 3.6% 40.2%
Racial breakdown
White
59.5%
Black or African American
0.3%
American Indian and Alaska Native
0%
Asian
33.1%
Native Hawaiian and other Pacific Islander
0%
Two or more races
6.5%
Other
0.6%
Value Percent
White 4,795 59.5%
Black or African American 26 0.3%
Asian 2,664 33.1%
Two or more races 523 6.5%
Other 48 0.6%

Households in Oak Brook

A peek inside Oak Brook households

Oak Brook has 3,061 households, with an average of 3 members in each. Of these, 74.4% are families, while the remaining 25.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
3,061
6.9% year-over-year change
Average people per household
3
Non-family households
782
Family households
2,279
Value Percent YoY change
Non-family households 782 25.6% 21.6%
Family households 2,279 74.4% 2.7%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Oak Brook

The housing landscape of Oak Brook

Oak Brook's housing consists of 3,373 units, with 80.1% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 7.7% and offer a more compact, shared living style.

Housing units
3,373
7.0% year-over-year change
Housing types
Value Percent
1 unit, detached 2,703 80.1%
1 unit, attached 259 7.7%
2 units 14 0.4%
20 to 49 units 149 4.4%
50 or more units 248 7.4%
Homes built since 2020
68
134.5% year-over-year change

The age of buildings in Oak Brook

In Oak Brook, the median construction year is 1979. About 0.4% of homes were built before the 1940s, with another 3.4% going up by 1949. Most development happened in the second half of the 20th century. Then, 5.9% of homes were added from 2000 to 2009, 5.2% between 2010 and 2019, and 2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 13 0.4% 8.3%
Built between 1940 and 1949 116 3.4% 205.3%
Built between 1950 and 1959 210 6.2% -7.1%
Built between 1960 and 1969 404 12% -12.4%
Built between 1970 and 1979 1,106 32.8% 3.2%
Built between 1980 and 1989 906 26.9% 11.3%
Built between 1990 and 1999 176 5.2% 18.1%
Built between 2000 and 2009 199 5.9% 11.2%
Built between 2010 and 2019 175 5.2% 2.3%
Built in 2020 or later 68 2% 134.5%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Oak Brook occupancy rates

Out of the 3,061 occupied housing units in Oak Brook, 91.1% are owner-occupied, while 8.9% are lived in by tenants. Meanwhile, 9.2% of all homes on the local market sit vacant.

Occupied housing units
3,061
6.9% year-over-year change
Occupancy breakdown
Renter occupied
272
Owner occupied
2,789
Value Percent YoY
change
Renter occupied 272 8.9% 50.3%
Owner occupied 2,789 91.1% 4.0%
Unoccupied housing units
9.2%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Oak Brook housing costs

Housing costs in Oak Brook come to a median of $2,669 per month, while tenants specifically pay a median gross rent of $2,590.

Median housing costs per month
$2,669/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Oak Brook
$2,590/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Oak Brook

Oak Brook education at a glance

About 14.8% of the population in Oak Brook went to high school, while 15.1% pursued college studies. Another 5.7% earned an associate degree and 31.6% hold a bachelor’s. Meanwhile, 31.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 80 1.2% 29.0%
High school diploma 980 14.8% 5.0%
College diploma 999 15.1% 2.6%
Associate degree 375 5.7% 11.9%
Bachelor's degree 2,091 31.6% 5.8%
Graduate degree 2,088 31.6% 3.5%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Oak Brook

How much people earn in Oak Brook

The average annual household income in Oak Brook was $271,560 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.7% change from the previous year. At the same time, the median income stood at $175,870, reflecting a +2.8% shift over the same period.

Average household income in Oak Brook
$271,560/year
2.7% year-over-year change
Median household income in Oak Brook
$175,870/year
2.8% year-over-year change

Oak Brook income by age

In Oak Brook, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $250,001. Those with someone between 45 and 64 in charge, often well established professionally, earn $175,586 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $2,499, while those led by someone over 65, many of whom may be retired, have about $138,698 in earnings. Overall, 93.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $2,499 N/A
25 - 44 $250,001 0.0%
45 - 64 $175,586 3.2%
Over 65 $138,698 8.3%
Above poverty level
7,374
Below poverty level
517
Value Percent YoY
change
Above poverty level 7,374 93.4% 1.4%
Below poverty level 517 6.6% -9.0%

Employment in Oak Brook

Workforce and job types in Oak Brook

The job market in Oak Brook is powered by 2,918 working residents, spread across a range of industries and roles. 91.3% of the working population are employed in professional or administrative positions, while 8.7% are in hands-on or service-based jobs. Also, 14.9% run their own businesses, 69% are employed by private companies, and 10.3% work in the public sector.

Workforce demographics

Working population
2,918
-1.9% year-over-year change
White collar
2,665
Blue collar
253
Value Percent YoY change
White collar 2,665 91.3% -0.6%
Blue collar 253 8.7% -13.1%
Employer type
Self employees
14.9%
Private companies
69%
Governmental workers
10.3%
Not for profit companies
5.8%
Value Percent YoY change
Self employees 435 14.9% -32.0%
Private companies 2,014 69% 15.7%
Governmental workers 301 10.3% -9.1%
Not for profit companies 168 5.8% -35.6%
Unemployment rate
10.0%
1.6% year-over-year change

Available workforce

The unemployment rate in Oak Brook stands at 10%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Oak Brook

How people get around in Oak Brook

Commuting methods vary: 75% of residents travel by personal vehicle and 1.6% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 2,132 75% -7.3%
Subway or elevated 44 1.6% N/A
Railroad 28 1% -26.3%
Walk 45 1.6% 32.4%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Oak Brook by zipcode?

Zipcode Population Number of households Median income Average income
60523 10,144 4,433 $118,194 $214,459

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FAQs about Oak Brook demographics 

What is the total population of Oak Brook?

Oak Brook has a total population of 8,056 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +0.3% compared to a year ago.

What is the gender ratio in Oak Brook?

The gender ratio in Oak Brook is as follows:
  • 47.9% males (3,861 residents)
  • 52.1% females (4,195 residents)

What is the median age in Oak Brook?

The median age in Oak Brook is 55.2.

What is the age distribution of the population in Oak Brook?

The age distribution in Oak Brook is as follows:
  • Under 15: 14.5% (1,170 residents)
  • Ages 15-24: 10.8% (867 residents)
  • Ages 25-44: 12.7% (1,026 residents)
  • Ages 45-64: 27.9% (2,247 residents)
  • Over 65: 34.1% (2,746 residents)

What is the racial and ethnic makeup of Oak Brook?

The racial and ethnic makeup of Oak Brook is as follows:
  • White: 59.5% (4,795 residents)
  • Black or African American: 0.3% (26 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 33.1% (2,664 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 6.5% (523 residents)
  • Other: 0.6% (48 residents)

What percentage of the population in Oak Brook are U.S.-born citizens?

U.S.-born citizens represent 68.8% of the population in Oak Brook.

How many housing units are there in Oak Brook?

There are 3,373 housing units in Oak Brook, reflecting a +7.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Oak Brook and what is the average household size?

Oak Brook has a total of 3,061 households, with an average of 3 people in each.

What is the median household income in Oak Brook?

Oak Brook has a median household income of $175,870, representing a +2.8% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Oak Brook?

The employment rate is 90% in Oak Brook, with a workforce of 2,918 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 91.3% (2,665 residents)
  • Blue-collar workers: 8.7% (253 residents)

Places of employment:
  • Self-employed: 14.9% (435 residents)
  • Private companies: 69% (2,014 residents)
  • Governmental workers: 10.3% (301 residents)
  • Not-for-profit companies: 5.8% (168 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025