Caller ID for
Area code 484
Area code 484 Allentown, Pennsylvania
Area code 484 is in Pennsylvania, with numbers assigned in Allentown, Reading, West Chester and 51 more places. It’s 12:10 AM there now.
- State
- Pennsylvania15 area codes in Pennsylvania
- Time zone
- Eastern12:10 AM there now
- Exchanges
- 78654 places
- Overlay
- 610 and 835Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 484 is
Numbers in 484 are assigned to 54 places in 12 counties: Lehigh County, Chester County, Berks County, Northampton County, Montgomery County, Armstrong County, plus 6 more.
No single place dominates: Allentown, the largest, has 10% of the exchanges.
- Allentown82
- Reading51
- West Chester36
- Bethlehem30
- Pottstown20
- Easton15
- Collegeville13
- Downingtown10
- Catasauqua10
- Coatesville10
- Exton9
- Phoenixville9
- Royersford9
- Kennett Square9
- Centerport8
- Bath8
- Slatington7
- Lenape Heights7
- Eagle6
- Nazareth6
- Oxford6
- Fleetwood6
- Honey Brook6
- Schwenksville6
Phone companies in 484
786 blocks of numbers in 484 are held by 37 phone companies. The most belong to Paetec Itel (152), Lumen (Level 3) (128) and T-Mobile (86).
A large share, about 67%, belongs to competitive and internet phone carriers; wireless networks hold 24% and local phone and cable companies 9%.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
484 went into service in 1999, added to the area of 610.
610 (since 1994) and 835 (since 2022) share the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
32 new exchanges were assigned since 2021, the latest in May 2023.
Calling 484
It’s 12:10 AM Eastern time in 484 right now.
From elsewhere in the U.S., dial 1, 484 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
Pennsylvania has 15 area codes: 215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835 and 878.
- 267 · Philadelphia, PA · about 35 mi
- 445 · Philadelphia, PA · about 37 mi
- 215 · Philadelphia, PA · about 38 mi
- 856 · Camden, NJ · about 53 mi
- 717 · Harrisburg, PA · about 59 mi
- 223 · Harrisburg, PA · about 61 mi
From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.
Map of the 484 area code
Map of the 484 area code around Allentown, Reading and West Chester, Pennsylvania.
Cities on the map
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Questions about 484
Where is area code 484?
In Pennsylvania, covering Allentown, Reading and West Chester and other places across 12 counties.
What time zone is 484 in?
Eastern time. It was 12:10 AM there when this page loaded.
Is 484 an overlay?
Yes. 610 and 835 serve the same area, so dial all 10 digits for local calls.
Which phone companies have 484 numbers?
37 companies hold blocks; the most belong to Paetec Itel, Lumen (Level 3) and T-Mobile. About 24% of blocks are wireless.
Is 484 running out of numbers?
Not on record. 32 new exchanges have been assigned since 2021.