Allentown, Pennsylvania

Where Is Area Code 484?

Area code 484 serves eastern Pennsylvania, including Allentown and the Lehigh Valley. It covers the same calling area as area codes 610 and 835. This region lies northwest of Philadelphia and includes communities in southeastern Pennsylvania.

Area code 484 covers major cities such as Allentown, Reading, Bethlehem, and West Chester. It also serves parts of counties that include Lehigh County, Northampton County, Berks County, Chester County, Delaware County, and Montgomery County. Other communities in the 484 area include Norristown, Pottstown, and Media.

Area code 484 reaches well-known places in the region, including the Lehigh Valley and parts of the Delaware Valley. It serves areas near landmarks such as Lehigh University in Bethlehem and West Chester University in West Chester. The area also includes communities near the Schuylkill River and the Delaware River.

History of Area Code 484

Area code 484 began service on June 5, 1999. The Pennsylvania Public Utility Commission created it as an overlay for area code 610. Area code 610 itself had split from area code 215 in 1994 as phone demand grew in the suburbs and smaller cities west and north of Philadelphia.

Area code 484 did not replace 610. It was added to the same geographic region so new phone numbers could be assigned without forcing most existing customers to change numbers. In 2022, area code 835 was added as another overlay to the same 610 and 484 service area as the supply of numbers continued to shrink.

Key Facts About Area Code 484

• Area code 484 is in Pennsylvania, and Allentown is one of the best-known cities in the area.
• Area code 484 is part of the North American Numbering Plan, which includes the United States, Canada, and certain Caribbean countries.
• Area code 484 uses the Eastern Time Zone.
• Area code 484 is an overlay area code, not an original 1947 area code.
• Area code 484 shares the same service region as area codes 610 and 835.
• Area code 484 serves parts of southeastern Pennsylvania, including cities such as Allentown, Bethlehem, Reading, and West Chester.
• Major institutions in the 484 area include Lehigh University in Bethlehem and West Chester University in West Chester.
• Ten-digit dialing applies in the 484 area because it is part of an overlay complex.

Frequently Asked Questions

What state is area code 484 in?

Area code 484 is in Pennsylvania.

What major cities use area code 484?

Major cities in area code 484 include Allentown, Bethlehem, Reading, West Chester, Norristown, and Media.

Is area code 484 a toll-free number?

No. Area code 484 is a geographic area code for eastern Pennsylvania.