Area code 314
Telephone area code for St. Louis, Missouri
Area code 314 is an area code for Missouri. It was one of the primary area codes created in 1947. It initially covered the eastern portion of the state but after it was split by 573 in 1996 and 636 in 1999. It now covers the St. Louis territory. It was overlaid by 557 on August 12, 2022.
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