Oak Brook, IL
Population 8,028 · Illinois
About Oak Brook, IL
Oak Brook is a small community in Illinois with a population of 8,028 residents. The median household income is $171,123 per year, which is above the national average. The median age in Oak Brook is 51.7 years.
Housing in Oak Brook has a median home value of $867,900 and median monthly rent of $2,921. Of the 3,151 total housing units, the majority are owner-occupied, with 2,682 owner-occupied and 181 renter-occupied units.
The unemployment rate in Oak Brook is 9.7% and the poverty rate is 7.3%. 67.1% of residents hold a bachelor's degree or higher. The average commute time is 32.4 minutes.
How Oak Brook Ranks in Illinois
Cost of Living in Oak Brook, IL
Compared to national averages, Oak Brook has a median household income of $171,123 (128% above the national median of $75,149). Home values average $867,900, which is 254% above the national median. Monthly rent at $2,921 is 151% above the US average of $1,163. Within Illinois, Oak Brook's income is 128% above the state average of $75,072, and home values are 424% above the state median of $165,779.
Why Live in Oak Brook, IL?
Oak Brook offers a strong local economy with a median household income of $171,123, well above the national average, and a well-educated community where 67.1% of residents hold a bachelor’s degree or higher, and a low poverty rate of 7.3%, better than the national average.
Potential considerations include a competitive housing market where the typical home costs $867,900. However, Oak Brook’s smaller community size offers a quieter lifestyle and tight-knit neighborhoods.
Oak Brook has a population of 8,028 with a median age of 51.7 years. Compare Oak Brook with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Oak Brook
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| Island Lake | 8,023 | $98,125 | $241,900 | Compare |
| Silvis | 7,939 | $67,569 | $161,300 | Compare |
| Lincolnshire | 7,937 | $179,735 | $625,800 | Compare |
| South Beloit | 7,930 | $81,836 | $160,800 | Compare |
| Hillside | 8,133 | $70,772 | $233,800 | Compare |
| Paris | 8,154 | $51,798 | $71,200 | Compare |
| Broadview | 7,898 | $60,139 | $240,600 | Compare |
| West Dundee | 7,867 | $104,750 | $342,900 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Oak Brook
What is the population of Oak Brook, IL?
The population of Oak Brook, IL is 8,028 according to the latest Census data.
What is the median household income in Oak Brook?
The median household income in Oak Brook, IL is $171,123 per year.
What is the median home value in Oak Brook?
The median home value in Oak Brook, IL is $867,900.
What is the average rent in Oak Brook?
The median monthly rent in Oak Brook, IL is $2,921.
What is the unemployment rate in Oak Brook?
The unemployment rate in Oak Brook, IL is 9.7%.