Oak Forest, IL Profile: Facts, Map & Data


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Oak Forest, Illinois - Basic Facts

The City of Oak Forest is an incorporated place (Class Code P1) located in Cook County at latitude 41.607 and longitude -87.7535. Cook County is in the Central time zone (GMT -6). The elevation is 673 feet.

The formal official name is the City of Oak Forest, but most people and references simply refer to it as Oak Forest, Illinois.

The P1 Census Class Code for Oak Forest indicates a populated place that is also an incorporated place with the same name and the same census code. The Incorporated Place has a Functional Status Code "A" which identifies an active government providing primary general-purpose functions.

The formal boundaries for the City of Oak Forest (see map below) encompass a land area of 5.95 sq. miles and a water area of 0.05 sq. miles.

City of Oak Forest, IL Boundary Map


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Oak Forest, IL Data & Demographics (As of July 1, 2014)


Total Population 27,659
Population in Households 27,615
Population in Familes 23,799
Population in Group Qrtrs 44
Population Density1 4,647
Diversity Index2 48


Total Households 10,148
Average Household Size 2.72
Family Households 7,324
Average Family Size 3


Total Housing Units 10,683 (100%)
Owner Occupied HU 8,162 (76.4%)
Renter Occupied HU 1,986 (18.6%)
Vacant Housing Units 535 ( 5.0%)
Median Home Value $217,146
Average Home Value $225,766


Median Household Income $69,309
Average Household Income $81,844
Per Capita Income $29,991
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population -0.26% -0.1%
Households -0.14% -0.02%
Families -0.18% -0.08%
Median Household Income   2.46%
Per Capita Income   2.56%
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 Forest, IL - Peer Comparisons by Rank and Percentile

The table below compares Oak Forest to the other 1,367 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2014 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 # 75 95th
Population Density1 # 53 96th
Diversity Index2 # 182 87th
Median Household Income # 250 82nd
Per Capita Income # 319 77th

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