Question 1

Where is area code 557?

Accepted Answer

Area code 557 covers St. Louis and nearby cities including Florissant, Affton, Ferguson in Missouri, in the Central Time.

Question 2

What cities use area code 557?

Accepted Answer

Area code 557 serves St. Louis, Florissant, Affton, Ferguson, Hazelwood, and 7 other communities in Missouri.

Question 3

What time zone is area code 557 in?

Accepted Answer

Area code 557 is in the Central Time (America/Chicago).

Question 4

How do you dial a 557 number?

Accepted Answer

Dial all 10 digits: 557 followed by the 7-digit local number. From outside the United States, dial +1 557 and the local number.

Question 5

Is a call from area code 557 a scam?

Accepted Answer

A 557 number is geographically tied to Missouri, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Question 6

Is 557 a country code?

Accepted Answer

No. 557 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1. So a full 557 number written for international dialing looks like +1 557 followed by the 7-digit local number.

Area Code 557

Cities in area code 557

Area codes by city

Other Missouri area codes

Nearby area codes