Castle Shannon, Pennsylvania Area Code

Castle Shannon, PA Area Codes are

412 and 878

Castle Shannon, PA is officially utilizing an area code overlay in which area codes 412 and 878 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.

In addition to Castle Shannon, PA area code information read more about area codes 412 and 878 details and Pennsylvania area codes.

Castle Shannon, PA is located in Allegheny County and observes the Eastern Time Zone. View our Times by Area Code tool.

Pennsylvania Area Code Map