StatisticOak BrookIllinoisNational
Population7,98812,671,821328,239,523
Population density (sq mi)1,00322891
Median age55.137.437.7
Male/Female ratio0.9:11.0:11.0:1
Married (15yrs & older)74%55%55%
Families w/ Kids under 1821%44%43%
Speak English72%77%79%
Speak Spanish2%13%13%

Key findings

  • The population density in Oak Brook is 340% higher than Illinois
  • The median age in Oak Brook is 47% higher than Illinois
  • In Oak Brook 69.29% of the population is White
  • In Oak Brook 2.35% of the population is Black
  • In Oak Brook 22.31% of the population is Asian

Compare Oak Brook, IL Demographics

      vs

      Oak Brook population breakdown by race

      RaceOak BrookIllinoisNational
      White69.29%72.14%73.35%
      Black2.35%14.30%12.63%
      Asian22.31%5.10%5.22%
      American Indian0.13%0.23%0.82%
      Native Hawaiian0.00%0.03%0.18%
      Mixed race3.91%2.34%3.06%
      Other race2.02%5.86%4.75%
      In Oak Brook, 4.1% of people are of Hispanic or Latino origin.
      Please note: Hispanics may be of any race, so also are included in any/all of the applicable race categories above.

      Household income distribution

      Place of birth by citizenship

      Oak Brook age breakdown

      Marital status

      Age of children in married couples

      Source: The Oak Brook, IL demographics data displayed above is derived from the 2016 United States Census Bureau American Community Survey (ACS).