Pennsylvania Area Codes

Area codes: 15
ZIP codes: 2,176
Cities & towns: 1,786
Counties: 67

Every area code in Pennsylvania

All Pennsylvania area codes, what each primarily serves, and which share ground with another.
Area code	Primarily serves	Shares ground with	In service
215	Philadelphia	267, 445	1947
223	Lancaster	717	2017
267	Philadelphia	215, 445	1999
272	Scranton	570	2013
412	Pittsburgh	878	1947
445	Philadelphia	215, 267	2018
484	Philadelphia	610, 835	1999
570	Scranton	272	1998
582	Erie	814	2021
610	Philadelphia	484, 835	1994
717	Lancaster	223	1947
724	Pittsburgh	878	1998
814	Erie	582	1947
835	Philadelphia	484, 610	2022
878	Pittsburgh	412, 724	2001

A code in the “shares ground” column is an overlay: it covers the same territory rather than a different part of Pennsylvania, which is why local calls there are dialled as ten digits.

Which codes share the same ground

Pennsylvania has 6 groups of codes that overlay one another: the codes inside a group cover the same territory rather than different parts of the state, so local calls there are dialled as ten digits.

Where Pennsylvania's communities sit

Each point is a Pennsylvania community, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Largest Pennsylvania cities and their codes

largest 25

Scope every area code assigned to Pennsylvania. Source LocalCallingGuide NPA list (2026-07 NPA list) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. Overlay relationships come from the numbering-plan authority; the city match is computed.