Oak Brook, IL Profile: Facts, Map & Data


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Oak Brook, Illinois - Basic Facts

The Village of Oak Brook had a population of 7,966 as of July 1, 2016. Oak Brook ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Oak Brook is located at latitude 41.8366 and longitude -87.9533 in DuPage County. The formal boundaries for the Village of Oak Brook (see map below) encompass a land area of 7.96 sq. miles and a water area of 0.33 sq. miles. DuPage County is in the Central time zone (GMT -6). The elevation is 663 feet.

The Village of Oak Brook (GNIS ID: 2399533) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The Village of Oak Brook is located within Township of York, a minor civil division (MCD) of DuPage County.

Beneath the boundary map are tables with Oak Brook population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Oak Brook: Oakbrook.

Neighborhood Data

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Village of Oak Brook, IL Boundary Map

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Boundary Maps: Township of York | DuPage County | Illinois Counties

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Oak Brook, IL Data & Demographics (As of July 1, 2016)


Total Population 7,966
Population in Households 7,889
Population in Familes 6,947
Population in Group Qrtrs 77
Population Density1 1,000
Diversity Index2 51


Total Households 2,991
Average Household Size 2.64
Family Households 2,233
Average Family Size 3


Total Housing Units 3,246 (100%)
Owner Occupied HU 2,697 (83.1%)
Renter Occupied HU 294 ( 9.1%)
Vacant Housing Units 255 ( 7.9%)
Median Home Value $814,975
Average Home Value $814,451


Median Household Income $128,595
Average Household Income $194,357
Per Capita Income $77,462
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.17% 0.3%
Households 0.28% 0.37%
Families -0.9% 0.27%
Median Household Income   2.75%
Per Capita Income   1.79%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Oak Brook, IL - Peer Comparisons by Rank and Percentile

The table below compares Oak Brook to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 259 81st
Population Density1 # 755 45th
Diversity Index2 # 177 87th
Median Household Income # 23 98th
Per Capita Income # 7 100th

Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.

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