Glendale Heights
- County:
- DuPage County
- County Seat:
- No
- Area (mi²):
- 5.394
- State:
- Illinois
Glendale Heights is a village located in DuPage County, Illinois. Glendale Heights has a 2026 population of 32,866. Glendale Heights is currently growing at a rate of 0.66% annually but its population has decreased by -0.71% since the most recent census, which recorded a population of 33,100 in 2020.