A new area code is bringing 10-digit dialing to residents of 16 southcentral Pennsylvania counties.

The new 223 area code was added Saturday to the area covered by the 717 area code because there are almost no numbers left in the old area code. The 717 area, which includes the state capital of Harrisburg, is one of the last in the state to make the switch. Philadelphia area residents have had two area codes for 18 years.


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