La Grange
- County:
- Lewis County
- County Seat:
- No
- Area (mi²):
- 1.556
- State:
- Missouri
La Grange is a city located in Lewis County, Missouri. La Grange has a 2026 population of 806. La Grange is currently growing at a rate of 0.12% annually but its population has decreased by -2.3% since the most recent census, which recorded a population of 825 in 2020.