Marquette Heights
- County:
- Tazewell County
- County Seat:
- No
- Area (mi²):
- 0.974
- State:
- Illinois
Marquette Heights is a city located in Tazewell County, Illinois. Marquette Heights has a 2026 population of 2,485. Marquette Heights is currently declining at a rate of -0.12% annually and its population has decreased by -2.01% since the most recent census, which recorded a population of 2,536 in 2020.