Area codes · +1
Area code 551
Area code 551 is centred on Jersey City, New Jersey. We hold 3,168 allocated blocks for it across 23 rate centres, split 48% mobile, 25% landline and 26% VoIP.
The other area codes laid over 551
Area code 551 does not have Jersey City, New Jersey to itself. 1 other code — 201 — serves the same rate centres, laid over the same ground rather than dividing it. That is an overlay: a new code added when the old one ran out of numbers, covering the same streets. Two neighbours can hold different area codes, so the code says roughly when a number was issued rather than where it sits.
2015,528 blocks, 27 rate centres, mostly landline
Each holds its own blocks and its own carrier mix, so a 551 number and a 201 number from the same street can report different line types. Filtering Jersey City, New Jersey by area code needs all 2 of them.
551 is not confined to Jersey City, New Jersey itself: its blocks sit across 23 rate centres, named in the table below.
New Jersey is split across 10 area codes — 609, 732, 856, 201, 908, 551 and others. By allocated blocks 551 is the 8th largest of them, holding 7% of the New Jersey total.
Where 551 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Hasbrokhts and Xxxxxxxxxx are shortened. Names are reproduced as recorded rather than expanded — the abbreviation is the key the block data is filed under.
| Rate centre | Blocks | Share of 551 |
|---|---|---|
| Jerseycity | 567 | 18% |
| Hackensack | 501 | 16% |
| Bayonne | 335 | 11% |
| Union City | 256 | 8% |
| Ramsey | 204 | 6% |
| Fair Lawn | 187 | 6% |
| Cliffside | 143 | 5% |
| Kearny | 118 | 4% |
| Ridgewood | 110 | 3% |
| Closter | 88 | 3% |
| Rutherford | 88 | 3% |
| Leonia | 64 | 2% |
| Westwood | 61 | 2% |
| Englewood | 58 | 2% |
| Wyckoff | 58 | 2% |
| Park Ridge | 55 | 2% |
| Dumont | 53 | 2% |
| Oakland | 47 | 1% |
| Teaneck | 47 | 1% |
| Oradell | 42 | 1% |
| Cragmere | 39 | 1% |
| Hasbrokhts | 35 | 1% |
| Xxxxxxxxxx | 1 | 0% |
Carriers holding the most 551 blocks
Onvoy849 blocks
Verizon Wireless443 blocks
Omnipoint Communications, Inc.388 blocks
AT&T Wireless322 blocks
T-Mobile USA, Inc.226 blocks
Bandwidth211 blocks
The largest holder, Onvoy, has 27% of the code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 551 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 551 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 551?
Area code 551 covers Jersey City, New Jersey. It is not the only code there: 201 is an overlay on the same rate centres, so a Jersey City, New Jersey number can start with any of them.
Is a 551 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 551 the split runs 48% mobile, 25% landline and 26% VoIP, so mobile is the most likely single answer.
Which carriers hold 551 numbers?
The largest holders are Onvoy, Verizon Wireless, Omnipoint Communications, Inc.. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 551 numbers are there?
The code holds 3,168 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 551 covers on the order of 3,168,000 possible numbers — most of which have never been issued to anyone.