878 Area Code
Western Pennsylvania (overlay), Pennsylvania
Area code 878 is located in Western Pennsylvania (overlay), Pennsylvania. It covers Pittsburgh, New Castle, and surrounding areas in the Eastern time zone (UTC-5). Administered by NANPA.
Where is area code 878?
Area code 878 is located in Western Pennsylvania (overlay), Pennsylvania. It covers Pittsburgh, New Castle, and surrounding areas in the Eastern time zone (UTC-5).
Cities Covered by Area Code 878
Area code 878 primarily serves the Western Pennsylvania (overlay) area of Pennsylvania. The exact coverage includes Pittsburgh, New Castle, and Butler, along with surrounding communities and suburbs.
Time Zone
Eastern Time — UTC-5
Area code 878 operates in the Eastern Time Zone. When calling 878 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 878
Area code 878 was introduced in 2001 as a geographic area code serving Western Pennsylvania (overlay), Pennsylvania. It remains the primary area code for this region. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.