Learn about the 636 area code, including its location, cities, time zone, introduction date, and related area codes.
636 Area Code Details
Major Cities in the 636 Area Code
The 636 area code is associated with the following cities and communities:
- Ballwin
- Chesterfield
- O'Fallon
- Saint Charles
- Saint Peters
- Wildwood
Where Is Area Code 636 Located?
The 636 area code serves communities in Missouri. The exact communities and numbering assignments can change as telephone numbering resources are updated.
636 Area Code Time Zone
The 636 area code is associated with the Central time zone.
When Was 636 Area Code Introduced?
The 636 area code was introduced in 22-May-1999.
How to Call a 636 Area Code Number
For a call within the same numbering plan, dial the required local number according to your carrier’s dialing rules. For calls from outside the United States, use the United States country code (+1), followed by the area code and seven-digit telephone number.
636 Area Code FAQ
What state is 636 area code in?
The 636 area code is associated with Missouri.
What time zone is 636 area code in?
The 636 area code is associated with Central.
What cities use 636 area code?
Ballwin|Chesterfield|O'Fallon|Saint Charles|Saint Peters|Wildwood
More Questions About Area Code 636
What state is area code 636 in?
Area code 636 is associated with Missouri.
What time zone is area code 636 in?
The listed time zone for area code 636 is Central.