Unionville
- County:
- Tuscola County
- County Seat:
- No
- Area (mi²):
- 0.939
- State:
- Michigan
Unionville is a village located in Tuscola County, Michigan. Unionville has a 2026 population of 484. Unionville is currently declining at a rate of -0.21% annually and its population has decreased by -1.63% since the most recent census, which recorded a population of 492 in 2020.