ST. LOUIS — A new area code, 557, has been activated in the St. Louis area for new customers. The St. Louis area has been home to the 314 area code and now has a second one added to the list. The 314 ...

ST. LOUIS – Officials have activated a new area code in St. Louis City and St. Louis County. Earlier this year, the North American Numbering Plan Administrator (NANPA) announced the 314 area code ...