Louin
- County:
- Jasper County
- County Seat:
- No
- Area (mi²):
- 6.063
- State:
- Mississippi
Louin is a town located in Jasper County, Mississippi. Louin has a 2026 population of 266. Louin is currently declining at a rate of -0.37% annually and its population has decreased by -2.92% since the most recent census, which recorded a population of 274 in 2020.