Blair
- County:
- Trempealeau County
- County Seat:
- No
- Area (mi²):
- 4.298
- State:
- Wisconsin
Blair is a city located in Trempealeau County, Wisconsin. Blair has a 2026 population of 1,284. Blair is currently declining at a rate of -0.23% annually and its population has decreased by -2.8% since the most recent census, which recorded a population of 1,321 in 2020.