Unionville, Pennsylvania Area Code
Unionville, PA is officially utilizing an area code overlay in which area codes 484 and 610 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Unionville, PA area code information read more about area codes 484 and 610 details and Pennsylvania area codes.
Unionville, PA is located in Chester County and observes the Eastern Time Zone. View our Times by Area Code tool.