Saint Louis, Missouri Area Code
Saint Louis, MO is officially utilizing an area code overlay in which area codes 314, and 557 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Saint Louis, MO area code information read more about area codes 314, 557 and Missouri area codes.
Saint Louis, MO is located in Saint Louis City County and observes the Central Time Zone.
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