The area code 636 is located in St. Charles, Missouri.
The 636 area code serves St. Charles, Missouri, and surrounding regions, including parts of Jefferson County and Lincoln County. Established in 1999, this area code covers major cities such as:
A notable fact about St. Charles is its historic downtown area, which features charming architecture and is situated along the scenic Missouri River. Historically, it was the first state capital of Missouri, making it a key location in the state's heritage. Whether you're a resident or planning a visit, area code 636 connects you to a vibrant community rich in history and modern attractions.