The 636 area code covers St. Charles, Chesterfield, O'Fallon and more in Missouri. Provision a local 636 number in minutes.
Area code 636 covers the fast-growing western suburbs of St. Louis, Missouri. St. Charles County has been one of the fastest-growing counties in Missouri, with communities like O'Fallon and Wentzville attracting families from the urban core. Chesterfield is a significant commercial hub in St. Louis County. The code was split from 314 in 1999.
The 636 area code covers St. Charles, Chesterfield, O'Fallon, Wentzville in Missouri.
Phone numbers in the 636 area code operate on America/Chicago time.
Yes. The 636 area code was introduced in 1999 and remains an active geographic code today.
Yes. Ajoxi provisions virtual 636 numbers with instant activation, clean caller-ID delivery, Tier-1 routing, and no setup fees — so you can build a local presence in minutes.
Provision a 636 number with instant activation, clean caller-ID, and Tier-1 routing — no setup fees, live in minutes.