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Oak Brook

Village of Oak Brook

  •   State: 
    DuPage County
    Oak Brook
      County all: 
    DuPage | Cook
      County FIPS: 
    17043 | 17031
    41°49′58″N 87°55′44″W
      Area total: 
    8.30 sq mi (21.49 km²)
      Area land: 
    7.98 sq mi (20.66 km²)
      Area water: 
    0.32 sq mi (0.83 km²)
    663 ft (202 m)
    1958; Incorporated 1958
  •   Latitude: 
      Dman name cbsa: 
    Chicago-Naperville-Elgin, IL-IN-WI
    Eastern Standard Time (EST) UTC-5:00; Eastern Daylight Time (EDT) UTC-4:00
      ZIP codes: 

    Oak Brook, DuPage County, Illinois, United States

  •   Population: 
      Population density: 
    1,023.45 residents per square mile of area (395.15/km²)
      Household income: 
      Unemployment rate: 
  •   Sales taxes: 
      Income taxes: 

Oak Brook is a village mostly in DuPage County with a small portion in Cook County in Illinois. Per the 2020 census, the population was 8,163. This suburb of Chicago has the headquarters of several companies and organizations including Ace Hardware, Blistex, Federal Signal, CenterPoint Properties, TreeHouse Foods, and Lions Clubs International. It is the former corporate home of McDonald's and Ferrara Candy (now both moved to Chicago).Oak Brook was originally known as Fullersburg, named after Ben Fuller, an early settler. The name Oak Brook was used by local residents to distinguish their community from neighboring Hinsdale and Elmhurst, going back to the founding of the Oak Brook Civic Association almost two decades earlier. Oak Brook is located about 19 miles (31 km) west of the Chicago Loop (downtown Chicago) and is served by a network of major federal, state, and county roads. According to the 2010 census, Oak Brook has a total area of 8.279 square miles (21.44 km²), of which 7.95 square miles. (20.59 km²) (or 96.03%) is land and 0.329 sq miles (0.85 km²): Oakbrook Center shopping mall, which opened in 1962, is located in the northern part of the village. The village's adjacent neighbors are Elmhurst to the north, Hillside to the northeast, Westchester to the east, Hins Dale and Westmont to the south, Downers Grove to the southwest, and Lombard and Oakbrook Terrace to the northwest.


Oak Brook is the primary city name, but also Hinsdale are acceptable city names or spellings. The official name is Village of Oak Brook. Oak Brook was originally known as Fullersburg, named after Ben Fuller, an early settler. The name Oak Brook was used by local residents to distinguish their community from neighboring Hinsdale and Elmhurst. The Oak Brook Sports Core features polo fields, a golf course (which was at one time the venue for the Western Open), swimming and tennis facilities, and other recreational facilities not commonly found in a village of this size. In 1964 Butler entered a joint venture with the Del E. Webb Corporation of Phoenix, Arizona to increase development of the area. Webb's construction company constructed dozens of buildings in Oak Brook both commercial and residential. The Webb Corporation's involvement in the development of Oak Brook lasted into the late 1970s. Oakbrook Center shopping mall, which opened in 1962, is on the site of the original boundaries of the village, but a considerable amount of land was annexed soon after the founding of theVillage. The village was incorporated as a village in 1958, due in large part to the efforts of Paul Butler, a prominent civic leader and landowner. Butler's father had first moved to the vicinity in 1898 and opened a dairy farm shortly thereafter. His interest in sport was reflected in the Oak Brook sports Core, which features polos, golf courses, and swimming and Tennis facilities, among other facilities. The original boundaries were smaller than the present extent of the Village, but the land that is now the site was annexed shortly after the village's founding. The current boundaries were established in 1962.


According to the 2010 census, Oak Brook has a total area of 8.279 square miles (21.44 km²), of which 7.95 sq miles (20.59 km²) (or 96.03%) is land and 0.329sq miles (0.85km²) is water. Oak Brook is located about 19 miles (31 km) west of the Chicago Loop (downtown Chicago) and is served by a network of major federal, state, and county roads. The village's adjacent neighbors are Elmhurst to the north, Hillside to the northeast, Westchester to the east, Hinsdale and Westmont to the south, Downers Grove to the southwest, and Lombard and Oakbrook Terrace to the northwest. Most of Oak Brook consists of residential subdivisions, with the exception of the Oakbrook Center shopping mall and other retail and office properties along 22nd Street and the Interstate 88 corridor in the northern part of the village. It is not directly served by any CTA or Metra trains, but several Pace bus routes offer commuter train access to downtown Chicago. It has a population of 2,788. The city's population in 2010 was 2,816. It had a population decline from 2,917 in 2000 to 2,638 in 2010. The town's population growth rate since the 1970s has been around 1.9%. It has an area of 7.5 square miles. The population in 2000 was 1,817.


As of the census of 2010, there were 7,883 people, 2,939 households, and 2,363 families residing in the village. In 2011, 23.2% of Oak Brook's residents were Asian, making it the Chicago suburb with the second highest percentage of Asians. The estimated median annual income for a household in thevillage was $132,389, and the median income for the family was $152,209. In the village, the population was spread out, with 17.8% under the age of 18, 5.7% from 18 to 24, 13.8%. For every 100 females age 18 and over,there were 88.8 males. The average household size was 2.63 and the average family size was2.99. The per capita income was $79,711. About 1.1% of families and 1.7%. of the population were below the poverty line, including 2.6% of those age 65 or over. The population density was 991.6 inhabitants per square mile (382.9/km²). There were 3,188 housing units, at an average density of 401.0 per squaremile (154.8/km 2). The racial makeup was 71.8 per cent White, 2.0% African American,23.2 per cent Asian, 0.7 per cent some other race, and two or more races. Hispanic or Latino of any race were 4.3 per cent.


Oak Brook has its own school district, District 53, which includes Brook Forest Elementary School (grades K-5) and Butler Junior High School. Students that live within the district attend Hinsdale Central High School, District 86. Some residents of the village are within other DuPage county school districts and attend schools in Elmhurst, Downers Grove or Villa Park. Oak Brook is home to Sunshine Montessori of Oakbrook, a private school for children in kindergarten through eighth grade. The village is also home to the Community College of DuPage, a community college for students in ninth through 12th grade. It is located in the town of Willowbrook, which is in DuPage County. The town has a population of about 2,000. The school district is made up of four school districts: District 86, District 88, District 99 and District 201. The high school is in Willowbrook; the middle schools are in the towns of Elmhurst and Westmont. The community college is in Westmont; the private school is Oakbrook. It also has a private high school in the village called Oakbrook Preparatory School, which was founded in the 1970s. The public school district in Oakbrook is called District 53; the high schools in the district are in District 86 and District 99. The private school in OakBrook is called Brook Forest School, and it is in the Town of Oak Brook. It was established in the 1950s and has a enrollment of about 1,000 students.

Economy and business

The world headquarters of McDonald's Corporation was in Oak Brook from 1971 to 2018. Other corporations include Ace Hardware, Blistex, Crowe Horwath, TreeHouse Foods, Federal Signal, Sanford, CenterPoint Properties, Dantech Information Technology, Hub Group and Follett Higher Education Group. Global non-profit organizations such as Lions Clubs International, Zonta International and Institute in Basic Life Principles are also based in the village. The Village's 2011 Comprehensive Annual Financial Report, the top employers in the city are: United States Air Force, United States Navy, and United States Army Corps of Engineers, according to the city's economic report. The city's unemployment rate is 3.8 percent. The unemployment rate in the Chicago area is 4.1 percent. In the village, the unemployment rate was 3.7 percent in 2011. The village has a population of 4,000. The average household income in the Village is $62,500. The town has a crime rate of 1.7 per cent, the highest in the area. The poverty rate is 1.8 per cent. The median household income is $50,000, the lowest in the town's history. The population has a poverty rate of 0.9 per cent; the city has a unemployment rate of 2.2 per cent and a poverty level of 1 per cent in the Town of Oak Brook. The economy is based on the manufacturing and service sector, with the majority of jobs being in the manufacturing sector.


Oak Brook is a predominantly Republican village in presidential elections. Unlike most of DuPage county, it voted for Republican nominees Donald Trump, and Mitt Romney in each of the past three presidential election. The village is located in the northern part of the county, near the town of LaSalle. The town has a population of about 2,000 people. It is in DuPage County, which is in the southern part of Illinois, and borders the city of Naperville.

In popular culture

In the medical drama series ER, John Carter's parents are said to live in Oak Brook, referencing it as a rich area. The show filmed a funeral scene in Oakbrook's Bronswood cemetery in its 267th episode, "Twenty-One Guns" In a popular ad campaign by Hanes, Michael Jordan is asked by an irreverent yet likable "everyman" to join him at a conference in OakBrook, Illinois. In the TV series "The X-Files" Oak Brook is the setting for the episode titled "Folie a Deux." It is also the setting of an episode of the TV show "The Walking Dead" The town is also featured in the film "The Godfather: Part II", which is set in the town of Oak Brook. The town has been featured in a number of other films and TV shows, including "Jurassic Park" and "The Lord of the Rings", as well as "The Mummy" and the "Harry Potter and the Deathly Hallows: Part I and Part II" series of "The Wizard of Oz" The city is also mentioned in the book "The Hobbit" by author J.R. R. Tolkien, and in the movie "The Great wall of China" by the author's son, Harry Potter. It is the location of the novel "The Lost City of the Dead" by Stephen King, and the film's setting for "The Shining" by Harry Potter and The Last Knight.

Air Quality, Water Quality, Superfund Sites & UV Index

The Air Quality index is in Oak Brook, DuPage County, Illinois = 63.2. These Air Quality index is based on annual reports from the EPA. Higher values are better (100=best). The number of ozone alert days is used as an indicator of air quality, as are the amounts of seven pollutants including particulates, carbon monoxide, sulfur dioxide, lead, and volatile organic chemicals. The Water Quality Index is 48. A measure of the quality of an area’s water supply as rated by the EPA. Higher values are better (100=best). The EPA has a complex method of measuring the watershed quality, using 15 indicators such as pollutants, turbidity, sediments, and toxic discharges. The Superfund Sites Index is 21. Higher is better (100=best). Based upon the number and impact of EPA Superfund pollution sites in the county, including spending on the cleanup efforts. The UV Index in Oak Brook = 3.4 and is a measure of an area's exposure to the sun's ultraviolet rays. This is most often a combination of sunny weather, altitude, and latitude. The UV Index has been defined by the WHO ( and is uniform worldwide.


The most recent city population of 8,163 individuals with a median age of 52.8 age the population grows by 3.10% in Oak Brook, DuPage County, Illinois population since 2000 and are distributed over a density of 1,023.45 residents per square mile of area (395.15/km²). There are average 2.68 people per household in the 3,296 households with an average household income of $143,860 a year. The unemployment rate in Alabama is 8.70% of the available work force and has dropped -4.37% over the most recent 12-month period and the projected change in job supply over the next decade based on migration patterns, economic growth, and other factors will increase by 22.56%. The number of physicians in Oak Brook per 100,000 population = 386.3.


The annual rainfall in Oak Brook = 36.3 inches and the annual snowfall = 33 inches. The annual number of days with measurable precipitation (over .01 inch) = 109. The average number of days per year that are predominantly sunny = 188. 86 degrees Fahrenheit is the average daily high temperature for the month of July and 14.1 degrees Fahrenheit is the average daily low temperature for the month of January. The Comfort Index (higher=better) is 43, where higher values mean a more pleasant climate. The Comfort Index measure recognizes that humidity by itself isn't the problem. (Have you noticed nobody ever complains about the weather being 'cold and humid?) It's in the summertime that we notice the humidity the most, when it's hot and muggy. Our Comfort Index uses a combination of afternoon summer temperature and humidity to closely predict the effect that the humidity will have on people.

Median Home Cost

The percentage of housing units in Oak Brook, DuPage County, Illinois which are owned by the occupant = 90.46%. A housing unit is a house, apartment, mobile home, or room occupied as separate living quarters. The average age of homes = 29 years with median home cost = $580,440 and home appreciation of 2.16%. This is the value of the years most recent home sales data. Its important to note that this is not the average (or arithmetic mean). The median home price is the middle value when you arrange all the sales prices of homes from lowest to highest. This is a better indicator than the average, because the median is not changed as much by a few unusually high or low values. The property tax rate of $18.51 shown here is the rate per $1,000 of home value. If for simplification for example the tax rate is $14.00 and the home value is $250,000, the property tax would be $14.00 x ($250,000/1000), or $3500. This is the 'effective' tax rate.


The local school district spends $8,451 per student. There are 11.8 students for each teacher in the school. 1224.69% of the area’s population over the age of 25 with an Associate Degree or other 2-year college degree, 26.21% with a master’s degree, Ph.D. or other advanced college degree and 35.37% with high school diplomas or high school equivalency degrees (GEDs).

  • Oak Brook's population in DuPage County, Illinois of 1,036 residents in 1900 has increased 7,88-fold to 8,163 residents after 120 years, according to the official 2020 census.

    Approximately 51.92% female residents and 48.08% male residents live in Oak Brook, DuPage County, Illinois.

    As of 2020 in Oak Brook, DuPage County, Illinois are married and the remaining 30.16% are single population.

  • 32.3 minutes is the average time that residents in Oak Brook require for a one-way commute to work. A long commute can have different effects on health. A Gallup poll in the US found that in terms of mental health, long haul commuters are up to 12 percent more likely to experience worry, and ten percent less likely to feel well rested. The Gallup poll also found that of people who commute 61­–90 minutes each day, a whopping one third complained of neck and back pain, compared to less than a quarter of people who only spend ten minutes getting to work.

    86.04% of the working population which commute to work alone in their car, 4.12% of the working population which commutes to work in a carpool, 4.17% of the population that commutes using mass transit, including bus, light rail, subway, and ferry. 3.98% of the population that has their home as their principal place of work.

  • Of the total residential buildings in Oak Brook, DuPage County, Illinois, 90.46% are owner-occupied homes, another 2.89% are rented apartments, and the remaining 6.66% are vacant.

  • The 57.28% of the population in Oak Brook, DuPage County, Illinois who identify themselves as belonging to a religion are distributed among the following most diverse religions.

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