Carlisle, PA is currently using one area code which is area code 717. Area Code 717 was created in 1947 and was one of the original area codes assigned to Pennsylvania.
In addition to Carlisle, PA area code 717 serves much of south-central Pennsylvania the larger communities of Gettysburg, Harrisburg, Lancaster, Lebanon, and York in addition to many smaller communities within the service area.
Carlisle, PA is located in Cumberland County and observes the Eastern Time Zone. View our Times by Area Code tool.