Area code 636 — Missouri
Area code 636 is in Missouri and serves St. Charles, Chesterfield, Union, Troy. Time zone, overlays, counties and ZIP codes.
| Location | Missouri (St. Charles, Chesterfield, Union, Troy, and parts of east-central Missouri) |
|---|---|
| Main places | St. Charles, Chesterfield, Union, Troy |
| State | Missouri |
| Status | In service · since 1999 |
| Time zone | Central · |
| Local dialing | 7 digits |
History
- Split of 314
Counties (approximate)
Crawford CountyDentFranklin CountyGasconade CountyJeffersonJefferson CountyLincolnLincoln CountyMontgomery CountyPhelps CountyPike CountySaint CharlesSt. Charles CountySt. LouisSt. Louis CountyWarrenWarren CountyWashington County
ZIP codes in area code 636
Approximate: area code boundaries follow telephone rate centers, not ZIP codes.
63005 Chesterfield63006 Chesterfield63010 Arnold63011 Ballwin63012 Barnhart63013 Beaufort63014 Berger63015 Catawissa63016 Cedar Hill63017 Chesterfield63021 Ballwin63022 Ballwin63023 Dittmer63024 Ballwin63025 Eureka63026 Fenton63030 Fletcher63032 Florissant63037 Gerald63038 Glencoe63039 Gray Summit63040 Grover63041 Grubville63048 Herculaneum63049 High Ridge63050 Hillsboro63051 House Springs63052 Imperial63053 Kimmswick63055 Labadie63056 Leslie63057 Liguori63060 Lonedell63061 Luebbering63065 Mapaville63066 Morse Mill63068 New Haven63069 Pacific63070 Pevely63071 Richwoods
Format a 636 number
US numbers are written as (636) 555-0123 or 636-555-0123. From outside the US, dial +1 636 555 0123.
Is a call from 636 a scam?
An area code only tells you where a number was assigned. Caller ID can be faked (“spoofed”), so do not trust a call just because the area code looks local. Never share codes or payment details with unexpected callers.
Sources: NANPA via NumberResearch.org (CC BY 4.0); place names and history from Wikipedia (CC BY-SA 4.0). See data sources.