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 2025 population of 7,979. Oak Brook is currently declining at a rate of -0.44% annually and its population has decreased by -2.13% since the most recent census, which recorded a population of 8,153 in 2020.

The average household income in Oak Brook is $264,446 with a poverty rate of 7.27%.The median age in Oak Brook is 51.7 years: 54.5 years for males, and 48.2 years for females.

8K
Total Population
1,000
Density (mi²)
-35 -0.44%
Growth

Oak Brook Population

Oak Brook Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Oak Brook includes 61.52% White, 29.81% Asian, and smaller percentages for Black or African American, other race and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White4,93961.52%
Asian2,39329.81%
Two or more races5657.04%
Black or African American861.07%
Other race450.56%

Oak Brook Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Oak Brook's average per capita income is $119,659. Household income levels show a median of $171,123. The poverty rate stands at 7.27%.

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$233,523-
Families$194,432$292,507
Households$171,123$264,446
Non Families$89,129$164,768

$119,659

Average Income

$171,123

Median Household Income

7.27%

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)