Unionville, Chester County, Pennsylvania
|Elevation||449 ft (136.9 m)|
|- summer (DST)||EDT (UTC-4)|
Unionville is an unincorporated community in East Marlborough Township in southern Chester County, Pennsylvania, United States. It was originally known as "Jacksonville." The Unionville Village Historic District was added to the National Register of Historic Places in 1979.
Unionville High School is in the Southern Chester County League (SCCL) for the 2006-2007 school year and will be joining the Ches-Mont league for the 2007-2008 school year. UHS is also the home of the current SCCL champions in boys soccer and football.
- John H. Pugh (1827–1905), represented New Jersey's 2nd congressional district in the United States House of Representatives from 1877-1879.
- I. Milton Smith, poet in the latter half of the nineteenth century, was born in Unionville.
- "National Register Information System". National Register of Historic Places. National Park Service. 2010-07-09.
- John Howard Pugh, Biographical Directory of the United States Congress. Accessed August 27, 2007.