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Which area code is 878?
Where do 878 numbers come from?
Which code is +878?
Where is Exchange 878?
Area code 878 covers territory in 13 counties including: Allegheny, Westmoreland, Washington, Butler, Beaver, Fayette, Mercer, Lawrence, Indiana, Armstrong Its ...
Area code 878 serves the state of Pennsylvania. This area code was assigned on December 15th, 1999. On August 17th, 2001 it went into service.
Aug 21, 2014 · At the moment, numbers from the 878 area code will not be assigned in Pittsburgh itself (the 412 area) until it runs out of numbers as well.