La Prairie
- County:
- Adams County
- County Seat:
- No
- Area (mi²):
- 0.193
- State:
- Illinois
La Prairie is a village located in Adams County, Illinois. La Prairie has a 2026 population of 40. La Prairie is currently declining at a rate of 0% annually and its population has decreased by -2.44% since the most recent census, which recorded a population of 41 in 2020.