557 Area Code

Area code 557 is in Missouri (MO), USA and some of the main locations it covers are St Louis, University City, Mehlville, etc. (jump to city list below).

In service since August 12, 2022, area code 557 is an overlay Numbering Plan Area, part of overlay complex 314/557 (overlaying NPAs cover the same area).

The current time for places served by area code 557 is 02:16:07 PM (Central Time Zone).

Reverse phone lookup


Map of area code 557

More Missouri area codes


557 phone number location

NPANXX Area served1 Date2
557-200 Ladue 8/8/2022
557-201 Kirkwood 04/14/2023
557-202 St Louis 03/27/2023
557-203 Mehlville 05/19/2023
557-204 St Louis 05/22/2023
557-205 St Louis 06/01/2023
557-206 St Louis 06/01/2023
557-207 Oakville 06/15/2023
557-216 St Louis 06/01/2023
557-222 St Louis 05/04/2023
557-273 St Louis 01/25/2023
557-362 St Louis 01/25/2023
557-454 St Louis 01/25/2023
557-467 St Louis 8/8/2022
557-500 St Louis 8/12/2022
557-557 St Louis 05/15/2023
557-653 St Louis 01/25/2023
557-747 St Louis 01/25/2023
557-777 Creve Coeur 8/24/2022
557-888 Kirkwood 9/16/2022
557-953 St Louis 01/25/2023
557-996 St Louis 01/25/2023
557-999 Sappington 9/16/2022
  1. For 'Area served' we list the rate center. In the North American Numbering Plan a rate center is a geographic area used to determine local calling boundaries for billing purposes. Its name is generally a locality, often not the only one served by an NPA-NXX combination.
  2. Assignment date.
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Cities in area code 557

City1 County Time2
Affton St Louis C
Bridgeton St Louis C
Creve Coeur St Louis C
Earth City St Louis C
Ferguson St Louis C
Florissant St Louis C
Glencoe St Louis C
Hazelwood St Louis C
Kirkwood St Louis C
Ladue St Louis C
Maryland Heights St Louis C
Mehlville St Louis C
Oakville St Louis C
Overland St Louis C
Sappington St Louis C
Spanish Lake St Louis C
St Ann St Louis C
St Louis St Louis C
University City St Louis C
Valley Park St Louis C
Webster Groves St Louis C
  1. Listed above are most places served by area code 557. When multiple places in a state/province share the same name we list the largest one only. Cities with population over 50,000 are displayed in bold text.
  2. C stands for Central Time Zone (currently 02:16:07 PM).
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