484 Area Code — Allentown, PA
Area code 484 serves Allentown and 3 other cities in Pennsylvania. Local time follows America/New_York. It overlays with 610, so 10-digit dialling is required.
- State
- Pennsylvania
- Primary city
- Allentown
- Timezone
- America/New_York
- In service since
- 1999
- Type
- Overlay
- Overlay codes
- 610
Overlay of 610
Cities Served by 484
The 484 area code covers 4 cities and communities in Pennsylvania.
- Allentown
- Reading
- Bethlehem
- Easton
About Area Code 484
Area code 484 is a North American Numbering Plan (NANP) area code that has been in service since 1999. It is administered by NANPA on behalf of the FCC and serves the Pennsylvania region anchored on Allentown.
484 is an overlay code, which means it shares its geographic boundaries with one or more existing area codes (610). Overlays are created when a region exhausts the supply of phone numbers in its original area code. Within an overlay region, residents must dial all 10 digits even for local calls, because the same 7-digit number can exist under multiple area codes.
Mobile numbers in 484 are portable: a person who moved away from Allentown may still carry a 484 mobile number on their device. If you receive an unexpected call from a 484 number, run it through the reverse lookup tool above for the most accurate, free identification.
If you live or do business in Pennsylvania, you may also interact with neighbouring or overlay codes (610). See the related codes section below to explore the rest of Pennsylvania.
Other Pennsylvania Area Codes
Continue exploring the Pennsylvania numbering plan.
484 Area Code FAQ
Where is area code 484?
Area code 484 is located in Pennsylvania, primarily serving Allentown and surrounding cities including Reading, Bethlehem, Easton. The region operates on ET (America/New_York) time.
What state is 484 area code?
484 is a Pennsylvania area code. It was put into service in 1999 as an overlay and shares its geographic footprint with overlay code 610.
Is 484 a scam area code?
484 is a legitimate North American area code allocated by NANPA to Pennsylvania. Like any geographic area code, scammers sometimes spoof 484 numbers — judge each call by content (urgent demands, unfamiliar transfers) rather than the area code alone. Run the specific number through our reverse lookup if you're unsure.
What time zone does 484 use?
Area code 484 operates on ET (America/New_York). Numbers in this area code follow standard Pennsylvania time-zone rules including any daylight-saving transitions for that region.
Can I look up a specific 484 phone number?
Yes. Use the reverse lookup widget above to enter a full 484 number. NumLocation returns the line type (mobile, landline, VoIP), carrier, rate-center city, and any public listings tied to the number — free.
What's the difference between 484 and 610?
484 and 610 cover the same Pennsylvania geographic area as overlay codes. Calls between them are local, but you must dial all 10 digits. New phone numbers in this region are assigned from either pool depending on what's available with the carrier at signup.