CITIES AT 636 AREA CODE:

Antonia Augusta Cedar Hill Chesterfield Creve Coeur Crystal City Dardenne De Soto Defiance Earth City Eureka Fenton Fletcher Foley Foristell Gray Summit Harvester Hawk Point Herculaneum High Hill High Ridge Hillsboro House Springs Imperial Jonesburg Ladue Manchester Marthasville Maryland Heights Maxville Moscow Mills New Haven O Fallon Old Monroe Pacific Pond Portage Des Sioux Saint Ann Saint Charles Saint Clair Saint Louis Saint Peters Troy Truxton Union Valley Park Warrenton Washington Weldon Spring Wentzville Winfield Wright City