An area code overlay is the addition of another area code to the same geographic region as existing area codes. An overlay does not require telephone users to change their existing area code or phone number. It also does not change the way you dial calls. You’ll still use 10-digit dialing; dial the area code and phone number for all local calls, just as you do now.
Beginning on August 12, 2022, customers in the 314 area code overlay region of Missouri (including, but not limited to, the communities of St. Louis, Overland, Bridgeton, Florissant, Webster Groves, Creve Coeur, Kirkwood and Sappington) may be assigned a number beginning with the new 557 area code when they request new service or an additional line. Customers who receive the 557 area code must dial the area code and phone number for all local calls, just like customers with telephone numbers from the 314 area code do today.
Customers in the overlay region should:
The following will remain the same for customers nationwide:
If you have questions regarding this notice, please visit the Missouri Public Commission website.
