Area Code 557 at a Glance
| Area code | 557 |
| Region | Missouri |
| Country | United States |
| Primary timezone | America/Chicago |
| Dialing format | +1 (557) NXX-XXXX |
Frequently Asked Questions
Where is area code 557?
Area code 557 serves Missouri, United States.
Who is calling me from area code 557?
A call from area code 557 most likely originates from Missouri, 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 557 number?
Within North America: dial 1-557 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 557 and the number.