🇺🇸 551 area code
Area code 551 covers Jersey City, Hackensack, Fort Lee and Teaneck and the surrounding area in New Jersey. It shares that territory with 201, so the same neighbourhood can have numbers in any of them. Enter a 551 number below for a free check before you call back.
- Location: Jersey City, New Jersey
- Time zone: Eastern (UTC−5)
- In service since December 29, 2001
Nummer abfragen
Gültigkeit, Anbieter, Leitungstyp und Region im ersten Durchgang.
Area code 551 at a glance
Cities in the 551 overlay area
- Jersey City
- Hackensack
- Fort Lee
- Teaneck
- Fair Lawn
- Bayonne
- Englewood
- Kearny
- Bergenfield
- North Bergen
Is a 551 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so a 551 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 551 number to people in New Jersey because a local-looking call is more likely to be answered. If a 551 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 551
551 entered service on December 29, 2001, as an overlay on 201, which had run short of numbers.
It is part of the 201/551 overlay: the codes cover the same area, and a new line there can be given a number in any of them. Two neighbours — or two phones in one household — can have different area codes. That is also why local calls need the full ten digits.
Because 551 overlays the same ground, the cities listed are those of the codes it shares with.
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FAQ
Area code 551 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 551?
Area code 551 is in New Jersey, United States. It covers Jersey City, Hackensack, Fort Lee, Teaneck, Fair Lawn and Bayonne.
What time zone is area code 551?
551 is in the Eastern (UTC−5) time zone, and observes daylight saving time.
What area codes overlay 551?
201 serves the same area as 551. Numbers in all of them are local to one another.
When did area code 551 start?
551 entered service on December 29, 2001, created from 201.
How do I find out who called me from 551?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 551?
If you live in or near New Jersey, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 551 callers who will not leave a message are best looked up before you call back.
Got a call from 551?
Run the free check first — validity, carrier, line type and region — and unlock the full report only if you need it.