What is an Area Code? An area code is a section of a telephone number that denotes the broad area that the phone receiving the call is based in. Area codes were first introduced circa 1947 for operator use only. Area codes are three-digit numbers that represent Numbering Plan Areas (NPAs). The area code for a particular city or region is the series of numbers that you have to dial before someone’s number if you are making a phone call to that place from a different area. Area code 636 serves the state of Missouri.
The Table Below Shows the Towns and Cities That Use Area Code 636
| Arnold Augusta Ballwin Barnhart Byrnes Mill Cave Cedar Hill Cedar Hill Lakes Chain of Rocks Chesterfield Clarkson Valley Cottleville Crystal City Dardenne Prairie Defiance De Soto Ellisville Eureka Fenton | Festus Flint Hill Foley Foristell Fountain N’ Lakes Gray Summit Hawk Point Herculaneum High Hill High Ridge Hillsboro Horine Imperial Innsbrook Jonesburg Josephville Kimmswick LaBarque Creek Lake St. Louis | Lake Tekakwitha Manchester Marthasville Moscow Mills Murphy New Melle O’Fallon Old Monroe Olympian Village Pacific Parkdale Parkway Peaceful Village Pendleton Pevely Portage Des Sioux St. Charles St. Clair St. Paul | St. Peters Scotsdale Three Creeks Troy Truesdale Twin Oaks Union Valley Park Villa Ridge Warrenton Washington Weldon Spring Weldon Spring Heights Wentzville West Alton Wildwood Winchester Winfield Wright City |