551 area code
Area code 551 is in New Jersey. It covers Jersey City, Bayonne, Union City and 53 other places: 66 ZIP codes in Bergen and Hudson counties. Local time there is , Eastern Time. In service since 2001 as an overlay: it covers the same area as 201, so a number from there can have either code.
- State
- New Jersey
- Time zone
- Eastern
- Largest city
- Jersey City
- Overlays
- 201
- In service since
- 2001
- Rate centres
- 23
- Prefixes assigned
- 301 (3,010,000 numbers)
Who calls from a 551 number
NANPA records the carrier each block of 551 numbers is assigned to. Of the 2.9 million 551 numbers assigned, 54% are with cable, internet-calling, business and other carriers (Onvoy, Bandwidth and Peerless Network Of New Jersey); 46% with mobile carriers (T-Mobile, Verizon Wireless and AT&T Mobility).
That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.
| Carrier | Kind | Share |
|---|---|---|
| Onvoy | Cable, VoIP, other | 30% |
| T-Mobile | Mobile | 20% |
| Verizon Wireless | Mobile | 14% |
| AT&T Mobility | Mobile | 11% |
| Bandwidth | Cable, VoIP, other | 7% |
| Peerless Network Of New Jersey | Cable, VoIP, other | 3% |
An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.
Places in area code 551
The 21 places with a telephone rate centre of their own using 551, largest first. Each links to its ZIP codes.
| Place | ZIP codes | Population |
|---|---|---|
| Jersey City, NJ | 12 | 294,078 |
| Bayonne, NJ | 1 | 71,553 |
| Union City, NJ | 1 | 66,463 |
| Hackensack, NJ | 2 | 46,057 |
| Teaneck, NJ | 1 | 41,876 |
| Kearny, NJ | 2 | 40,614 |
| Fair Lawn, NJ | 1 | 35,610 |
| Englewood, NJ | 1 | 29,638 |
| Ridgewood, NJ | 2 | 26,308 |
| Cliffside Park, NJ | 1 | 25,781 |
| Rutherford, NJ | 1 | 18,894 |
| Dumont, NJ | 1 | 18,279 |
| Wyckoff, NJ | 1 | 17,050 |
| Ramsey, NJ | 1 | 14,805 |
| Oakland, NJ | 1 | 12,768 |
| Hasbrouck Heights, NJ | 1 | 12,115 |
| Westwood, NJ | 1 | 11,283 |
| Park Ridge, NJ | 1 | 9,406 |
| Leonia, NJ | 1 | 9,336 |
| Closter, NJ | 1 | 8,606 |
| Oradell, NJ | 1 | 8,235 |
Nearby places using 551
These places have no rate centre of their own in NANPA's records; the nearest one uses 551. Near an area-code boundary that can be wrong for part of a town.
- North Bergen
- Hoboken
- West New York
- Fort Lee
- Bergenfield
- Mahwah
- Palisades Park
- Weehawken
- New Milford
- Tenafly
- Fairview
- Edgewater
- Ridgefield Park
- River Edge
- Guttenberg
- Ridgefield
- Hillsdale
- Bogota
- Cresskill
- Montvale
- Upper Saddle River
- Emerson
- Allendale
- Woodcliff Lake
- Old Tappan
- Norwood
- Englewood Cliffs
- Harrington Park
- Demarest
- Northvale
- Saddle River
- Haworth
- Ramapo College of New Jersey
- Alpine
- Rockleigh
ZIP codes in area code 551
66 ZIP codes in 51 towns, by the town each is mailed to, largest first. Each links to its own page.
Where 551 numbers are issued
NANPA's rate centres with the most 551 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.
| Rate centre | Place | Prefixes |
|---|---|---|
JERSEYCITY | Jersey City | 53 |
HACKENSACK | Hackensack | 47 |
BAYONNE | Bayonne | 32 |
UNION CITY | Union City | 24 |
RAMSEY | Ramsey | 20 |
FAIR LAWN | Fair Lawn | 17 |
Counties
The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.
Which code covers where you are now? What area code am I in? answers from your location.
Questions about area code 551
Where is area code 551?
Area code 551 is in New Jersey. It covers Jersey City, Bayonne, Union City and 53 other places: 66 ZIP codes in Bergen and Hudson counties.
What ZIP codes are in area code 551?
66 ZIP codes, by the town each is mailed to: Jersey City (12, 07097 to 07399), Bayonne (07002), Union City (07087), North Bergen (07047) and 47 more towns. The full list is on this page.
What time zone is area code 551 in?
Eastern time.
Is a 551 number a mobile or a landline?
It can be either. 46% of 551 numbers are assigned to mobile carriers and under 1% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.
What area codes overlay 551?
201. They cover the same area as 551, so a new number there can be given any of them.
Does a 551 number mean the caller is in New Jersey?
Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 551 call can come from anywhere.
Other area codes in New Jersey
- 201 Jersey City
- 609 Trenton
- 640 Trenton
- 732 Toms River
- 848 Toms River
- 856 Vineland
- 862 Newark
- 908 Toms River
- 973 Newark
All 10 New Jersey area codes, by area, with the cities each covers
Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.
Cite this page
zipcodes.pro. “Area code 551.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/551
Underlying data is public domain or openly licensed — sources, vintages and licences.