The area code 717 is located in Lancaster, Pennsylvania.
Area code 717 serves Lancaster, Pennsylvania, and much of south-central Pennsylvania, linking the Susquehanna Valley with the state capital and historic towns. It was established in 1947 as part of the original North American Numbering Plan and later reshaped when 570 split off in 1998. In 2017, the 223 overlay was added to meet growing demand for phone numbers, so ten-digit dialing is now standard across the region. This code covers Amish Country, busy city centers, and major historic sites, making it one of the most recognized Pennsylvania area codes.
Key communities and landmarks in the 717/223 service area include:
From Lancaster’s Amish farmlands to the Pennsylvania State Capitol in Harrisburg, 717 spans a diverse landscape and a deep history. Visitors can tour Gettysburg National Military Park, explore the Lancaster Central Market, or enjoy family attractions in Hershey. Both landline and mobile phone numbers use 717 (and 223), and new numbers may be assigned either code. Because of the overlay, always dial the area code plus the seven-digit number for local calls within the region.
Established: 1947; Overlay 223: 2017; Ten-digit dialing: Yes — Sources: North American Numbering Plan Administration (NANPA) and Pennsylvania Public Utility Commission (PUC)