636 Area Code Data

Area code 636 has a total estimated population of 884,831 people and covers the following localities in Missouri:

  • Arnold
  • Augusta
  • Ballwin
  • Cedar Hill
  • Chesterfield
  • De Soto
  • Defiance
  • Eureka
  • Fenton
  • Festus
  • Foley
  • Foristell
  • Gray Summit
  • Grover
  • Hawk Point
  • High Hill
  • High Ridge
  • Hillsboro
  • House Springs
  • Imperial
  • Marthasville
  • Moscow Mills
  • O Fallon
  • Old Monroe
  • Pacific
  • Pevely
  • Portage Des Sioux
  • Saint Charles
  • Saint Clair
  • Saint Louis
  • Saint Peters
  • Troy
  • Truxton
  • Union
  • Valley Park
  • Warrenton
  • Washington
  • Wentzville
  • Winfield
  • Wright City

The (636) area code is comprised of 338 unique phone exchanges: