Area Code 551 at a Glance
| Area code | 551 |
| Region | New Jersey |
| Country | United States |
| Primary timezone | America/New_York |
| Dialing format | +1 (551) NXX-XXXX |
Frequently Asked Questions
Where is area code 551?
Area code 551 serves New Jersey, United States.
Who is calling me from area code 551?
A call from area code 551 most likely originates from New Jersey, but caller ID can be spoofed. If an unknown caller asks for personal or payment information, hang up and call the organization back on its official number.
How do I dial a 551 number?
Within North America: dial 1-551 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 551 and the number.