Weir
- County:
- Choctaw County
- County Seat:
- No
- Area (mi²):
- 1.051
- State:
- Mississippi
Weir is a town located in Choctaw County, Mississippi. Weir has a 2026 population of 438. Weir is currently growing at a rate of 0.46% annually but its population has decreased by -0.68% since the most recent census, which recorded a population of 441 in 2020.