Area Code 484 History:
Area code 484 was put into service. Area code 484 is an overlay of area code 610.
Counties in Pennsylvania within area code 484 include:
Berks County, Bucks County, Carbon County, Chester County, Delaware County, Lancaster County, Lebanon County, Lehigh County, Monroe County, Montgomery County, Northampton County, and Schuylkill County.
Major cities or places in Pennsylvania within area code 484 include:
Area codes 484 and 610 serve southeastern Pennsylvania including the larger cities and communities of Allentown, Bethlehem, Chester, Drexel Hill, Easton, Norristown, Pottstown, Radnor Township, and Reading in addition to many smaller communities within the 484 and 610 service area.