Caller ID for
Area code 551
Area code 551 Jersey City, New Jersey
Area code 551 is in New Jersey, with numbers assigned in Jersey City, Hackensack, Bayonne and 16 more places. It’s 12:13 AM there now.
- State
- New Jersey10 area codes in New Jersey
- Time zone
- Eastern12:13 AM there now
- Exchanges
- 30119 places
- Overlay
- 201Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 551 is
Numbers in 551 are assigned to 19 places in 2 counties: Bergen County and Hudson County.
No single place dominates: Jersey City, the largest, has 18% of the exchanges.
- Jersey City53
- Hackensack47
- Bayonne32
- Union City24
- Ramsey20
- Fair Lawn17
- Cliffside Park14
- Kearny11
- Ridgewood10
- Rutherford8
- Closter8
- Englewood6
- Leonia6
- Westwood6
- Dumont5
- Oakland5
- Park Ridge5
- Oradell4
- Hasbrouck Heights4
Phone companies in 551
301 blocks of numbers in 551 are held by 27 phone companies. The most belong to T-Mobile (73), Inteliquent (71) and Verizon Wireless (44).
A large share, about 49%, belongs to competitive and internet phone carriers; wireless networks hold 48% and local phone and cable companies 3%.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
551 went into service in 2001, added to the area of 201.
201 (since 1947) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
131 new exchanges were assigned since 2021, the latest in September 2026.
Calling 551
It’s 12:13 AM Eastern time in 551 right now.
From elsewhere in the U.S., dial 1, 551 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
New Jersey has 10 area codes: 201, 551, 609, 640, 732, 848, 856, 862, 908 and 973.
- 862 · Newark, NJ · about 13 mi
- 212 · New York, NY · about 14 mi
- 332 · New York, NY · about 14 mi
- 347 · New York, NY · about 14 mi
- 646 · New York, NY · about 14 mi
- 718 · New York, NY · about 14 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 551 area code
Map of the 551 area code around Jersey City, Hackensack and Bayonne, New Jersey.
Cities on the map
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Questions about 551
Where is area code 551?
In New Jersey, covering Jersey City, Hackensack and Bayonne and other places across 2 counties.
What time zone is 551 in?
Eastern time. It was 12:13 AM there when this page loaded.
Is 551 an overlay?
Yes. 201 serves the same area, so dial all 10 digits for local calls.
Which phone companies have 551 numbers?
27 companies hold blocks; the most belong to T-Mobile, Inteliquent and Verizon Wireless. About 48% of blocks are wireless.
Is 551 running out of numbers?
Not on record. 131 new exchanges have been assigned since 2021.