Editing Area codes 314 and 557 (section)

{{Short description|Telephone area code for St. Louis, Missouri}}
[[File:NANPA Missouri Area Codes 2022.gif|360px|thumb|]]

'''Area codes 314 and 557''' are telephone [[area code]]s in the [[North American Numbering Plan]] (NANP) in the [[U.S. state]] of [[Missouri]], serving the city of [[St. Louis]] and most of its inner-ring suburbs in neighboring [[St. Louis County, Missouri|St. Louis County]]. The numbering plan area is bordered to the west by [[area code 636]], which serves St. Louis' outer suburbs to the west, south, and north. Across the [[Mississippi River]] to the east, 314 is adjacent to [[area code 618]], which serves [[southern Illinois]] and most of [[Metro East]]. Area code 557 was added to the 314 numbering plan area on August 12, 2022, to form an [[overlay complex|overlay numbering plan]].<ref>{{Cite web|date=2022-02-08|title=A New 557 Area code is Coming to the 314 Area Code Region
|url=https://psc.mo.gov/Telecommunications/A_New_557_Area_Code_is_Coming_to_the_314_Area_Code_Region--pr-22-124|access-date=2022-07-15|website=Missouri Public Service Commission|language=en-US}}</ref>