Willowbrook URL: https://knowledge.ivjn.us/en/places/il-willowbrook.html Willowbrook is a town in Illinois, United States. ## Overview Willowbrook is a town in [Illinois](https://knowledge.ivjn.us/en/places/illinois.html), United States, with a population of about 8,613[^geonames]. ## Geography - Coordinates: 41.7698, -87.9359 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