Area Code 640 at a Glance
| Area code | 640 |
| Region | New Jersey |
| Country | United States |
| Primary timezone | America/New_York |
| Dialing format | +1 (640) NXX-XXXX |
Frequently Asked Questions
Where is area code 640?
Area code 640 serves New Jersey, United States.
Who is calling me from area code 640?
A call from area code 640 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 640 number?
Within North America: dial 1-640 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 640 and the number.