Where is Area Code 557?
Area code 557 is located in the state of Missouri. It serves several major cities, counties, and regions, providing a vital communication link for residents and businesses. The area code covers:
- St. Louis
- Florissant
- Oakville
- University City
- Mehlville
- Maryland Heights
- Kirkwood
- Hazelwood
For more information about the area code and its coverage, visit the Missouri Public Service Commission.
Missouri Public Service Commission
200 Madison Street, PO Box 360, Jefferson City, MO 65102-0360
Utility Consumer Hotline: (800)-392-4211
pscinfo@psc.mo.gov
What time zone is 557 area code in the USA?
The 557 area code is situated in the Central Time Zone (CT). This time zone observes Daylight Saving Time, shifting from Central Standard Time (CST) to Central Daylight Time (CDT) during the warmer months. For accurate timekeeping, refer to the National Institute of Standards and Technology.
History of the 557 Area Code
The 557 area code was introduced as an overlay to the existing 314 area code. This change was implemented to accommodate the growing demand for new telephone numbers in the region. Overlays are a common solution to number exhaustion, allowing multiple area codes to coexist within the same geographic area without requiring existing numbers to change.
For more details on the history and administration of area codes, visit the North American Numbering Plan Administrator (NANPA).
NANPA Mailing Address
One Tower Center Boulevard
Suite 800
East Brunswick, NJ 08816
NANPA Customer Support
Tel: 1-866-623-2282
Email: support@nanpa.com
Fax: 571-363-3838
How Many People Use the 557 Area Code?
The population served by the 557 area code includes the residents of the St. Louis metropolitan area and surrounding counties. This region is a significant hub of economic and cultural activity in Missouri. For demographic and population statistics, consult the U.S. Census Bureau.
U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282
Is the 557 Area Code Toll-Free?
The 557 area code is a geographic area code, not a toll-free number. It is designated for specific regions within Missouri and follows the standard dialing procedures for local and long-distance calls. Toll-free numbers in the United States typically begin with the prefixes 800, 888, 877, 866, 855, 844, or 833. For more information on toll-free numbers and their operation, visit the Federal Communications Commission.
Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/