Oak Brook Flag

Oak Brook

County:
DuPage County
County Seat:
No
Area (mi²):
7.976
State:
Illinois

Oak Brook is a village located in DuPage County, Illinois. Oak Brook has a 2026 population of 8,208. Oak Brook is currently growing at a rate of 0.12% annually and its population has increased by 0.74% since the most recent census, which recorded a population of 8,148 in 2020.

The median household income in Oak Brook is $175,870 with a poverty rate of 6.63%. The median age in Oak Brook is 55.2 years: 56.8 years for males, and 53.1 years for females. For every 100 females there are 92.0 males.

8.2K
Total Population
1,029
Density (mi²)
10 0.12%
Growth

Oak Brook Population

Oak Brook Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20268,208100.12%
20258,198100.12%
20248,188841.04%
20238,104520.65%
20228,052-40-0.49%
20218,092-56-0.69%
20208,148-10-0.12%
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%
20107,970871.1%
20008,702-476-5.19%
19909,1782,53738.2%
19806,6412,52361.27%
19704,11800%

Median Age

Overall: 55.2 years
Female: 53.1 years
Male: 56.8 years

Oak Brook Adults

There are 6,613 adults, (2,746 of whom are seniors) in Oak Brook.

Sex Ratio

Female: 4,195 (52.1%)
Male: 3,861 (47.9%)

Demographics

The racial composition of Oak Brook includes 59.52% White, 33.07% Asian, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White4,79559.52%
Asian2,66433.07%
Two or more races5236.49%
Other race480.6%
Black or African American260.32%
Race
Population ↓
Percentage (of total)
Two or more races3914.85%
Asian270.34%
Other race250.31%
White200.25%
Race
Population ↓
Percentage (of total)
White4,77559.27%
Asian2,63732.73%
Two or more races1321.64%
Black or African American260.32%
Other race230.29%

Oak Brook Marital Status

Economics and Income Statistics

Oak Brook 's average per capita income is $120,781. Household income levels show a median of $175,870. The poverty rate stands at 6.63%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$226,369-
Families$206,875$300,842
Households$175,870$271,560
Non Families$81,875$178,031

$120,781

Average Income

$175,870

Median Household Income

6.63%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)