West Chicago
- County:
- DuPage County
- County Seat:
- No
- Area (mi²):
- 15.392
- State:
- Illinois
West Chicago is a city located in DuPage County, Illinois. West Chicago has a 2026 population of 25,469. West Chicago is currently growing at a rate of 0.65% annually but its population has decreased by -0.37% since the most recent census, which recorded a population of 25,563 in 2020.