
Unionville
- County:
- Chester County
- County Seat:
- No
- Area (mi²):
- 0.244
- State:
- Pennsylvania
Unionville is a borough located in Chester County, Pennsylvania. Unionville has a 2025 population of 253. Unionville is currently declining at a rate of -1.17% annually and its population has decreased by -5.24% since the most recent census, which recorded a population of 267 in 2020.
The average household income in Unionville is $84,225 with a poverty rate of 8.46%. The median age in Unionville is 41.1 years: 41.1 years for males, and 41.3 years for females.