636 Area Code
The 636 area code serves the east-central part of Missouri, comprising mainly the western suburbs of St. Louis.
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State Data
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City Data
The 636 area code serves the east-central part of Missouri, comprising mainly the western suburbs of St. Louis.
Federal Data
State Data
County Data
City Data
Phone numbers with the 636 area code prefix originate from the east-central part of the U.S. state of Missouri. This includes areas west of St. Louis, encompassing various counties and cities within this region.
Area code 636 is a general purpose code which was placed in service on May 22, 1999.
Our Missouri phone number lookup service will analyze the three-digit prefix of any 636 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Missouri geographic region, and local calling area associated with the phone number.
Phone numbers follow the following structure under the North American Numbering Plan:
Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.
| Company | Number of Prefixes |
|---|---|
| SOUTHWESTERN BELL | 104 |
| CENTURYTEL MISSOURI LLC (SOUTHWEST)DBA CENTURYLINK | 45 |
| LEVEL 3 COMMUNICATIONS, LLC - MO | 18 |
| WINDSTREAM NUVOX MISSOURI, LLC | 17 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 15 |
| CHARTER FIBERLINK - MISSOURI, LLC - MO | 15 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 13 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MO | 13 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 8 |
| SPRINT SPECTRUM, L.P. | 8 |
| T-MOBILE USA, INC. | 8 |
| XO MISSOURI, INC. | 7 |
| GLOBAL CROSSING LOCAL SERVICES, INC. - MO | 6 |
| FUSION CLOUD SERVICES, LLC | 5 |
| MCLEODUSA TELECOMMUNICATION SERVICES, INC. - MO | 5 |
| AT&T - LOCAL | 3 |
| ONVOY, LLC - MO | 3 |
| AT&T CORP. | 2 |
| AURORA COMMUNICATIONS, INC. - MO | 1 |
| BANDWIDTH.COM CLEC, LLC - MO | 1 |
| METROPCS, INC. | 1 |
| ORCHARD FARM TEL. CO. | 1 |
| PEERLESS NETWORK OF MISSOURI, LLC - MO | 1 |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.
| Rate Center | Number of Prefixes |
|---|---|
| ST CHARLES | 37 |
| CHESTERFLD | 30 |
| HARVESTER | 25 |
| MANCHESTER | 23 |
| OFALLON | 16 |
| FENTON | 12 |
| FSSCRSTLCY | 11 |
| ST PETERS | 10 |
| WASHINGTON | 10 |
| HIGH RIDGE | 9 |
| IMPERIAL | 8 |
| WENTZVILLE | 8 |
| MAXVILLE | 7 |
| POND | 6 |
| TROY | 6 |
| UNION | 6 |
| VALLEYPARK | 6 |
| CEDAR HILL | 5 |
| DARDENNE | 5 |
| WARRENTON | 5 |
| DE SOTO | 4 |
| FORISTELL | 4 |
| PACIFIC | 4 |
| ANTONIA | 3 |
| EUREKA | 3 |
| HERCUMPVLY | 3 |
| HILLSBORO | 3 |
| PORTAGSIUX | 3 |
| ST CLAIR | 3 |
| AUGUSTA | 2 |
| DEFIANCE | 2 |
| FOLEY | 2 |
| GRAYSUMMIT | 2 |
| MARTHASVL | 2 |
| MOSCOW ML | 2 |
| NEW MELLE | 2 |
| OLD MONROE | 2 |
| WINFIELD | 2 |
| WRIGHTCITY | 2 |
| HAWK POINT | 1 |
| HOLSTEIN | 1 |
| JONESBURG | 1 |
| ORCHARDFRM | 1 |
| WARE | 1 |
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