Lostant
- County:
- LaSalle County
- County Seat:
- No
- Area (mi²):
- 1.13
- State:
- Illinois
Lostant is a village located in LaSalle County, Illinois. Lostant has a 2026 population of 430. Lostant is currently declining at a rate of -0.69% annually and its population has decreased by -0.69% since the most recent census, which recorded a population of 433 in 2020.