Oak Brook
URL: https://knowledge.ivjn.us/en/places/il-oak-brook.html

Oak Brook is a town in Illinois, United States.

## Overview

Oak Brook is a town in [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States, with a population of about 8,091[^geonames].

## Geography

- Coordinates: 41.8328, -87.9290

Updated: 2026-10-29

Relations:
- Located in: DuPage County https://knowledge.ivjn.us/en/places/il-dupage-county.html

Sources:
- GeoNames US dataset (US.txt / admin2Codes.txt) https://download.geonames.org/export/dump/US.zip