Pennsylvania currently utilizes 15 area codes. When first established by AT&T and the Bell System in 1947, 215 covered southeastern Pennsylvania including Philadelphia, 412 covered western Pennsylvania including Pittsburgh, 717 covered the eastern half of Pennsylvania except for the Delaware and Lehigh Valleys, and 814 covered northwestern and central Pennsylvania. The most recently added was 835 in 2022 as an overlay to 610. Today, 610 is the most populated with an estimated 2.6 million of the state's 12.7 million residents.
Timezone:Eastern
Timezone:Eastern
223 is an overlay for area code 717.
Timezone:Eastern
267 is an overlay for area code 215.
Timezone:Eastern
272 is an overlay for area code 570.
Timezone:Eastern
Timezone:Eastern
445 is an overlay for area code 215.
Timezone:Eastern
484 is an overlay for area code 610.
Timezone:Eastern
Timezone:Eastern
582 is an overlay for area code 814.
Timezone:Eastern
Timezone:Eastern
Timezone:Eastern
Timezone:Eastern
Timezone:Eastern
835 is an overlay for area code 610.
Timezone:Eastern
878 is an overlay for area code 412 and area code 724.