| Place Name | Oak Brook |
| Place Type | Village |
| ZIP Code(s) | 60523 |
| County | DuPage County |
| Area Code(s) | 331,630 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 7,905 |
| Population Growth Rate (2010-19) | 3.55% |
| Majority Ethnicity | White 64.23% |
| Metro/Micro Stats Area | Chicago-Naperville-Elgin, IL-IN-WI |
| US Congressional District(s) | Illinois 5thIllinois 6th |
| State House Districts | 47 |
| State Senate Districts | 24 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 64.23% |
| African American | 0.56% |
| Hispanic | 0% |
| Asian | 30.63% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.58% |