636 area code

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