633
- 63301 Saint Charles
- 63303 Saint Charles
- 63304 Saint Charles
- 63330 Annada
- 63332 Augusta
- 63333 Bellflower
- 63334 Bowling Green
- 63336 Clarksville
- 63339 Curryville
- 63341 Defiance
- 63343 Elsberry
- 63344 Eolia
- 63345 Farber
- 63347 Foley
- 63348 Foristell
- 63349 Hawk Point
- 63350 High Hill
- 63351 Jonesburg
- 63352 Laddonia
- 63353 Louisiana
- 63357 Marthasville
- 63359 Middletown
- 63361 Montgomery City
- 63362 Moscow Mills
- 63363 New Florence
- 63366 O Fallon
- 63367 Lake Saint Louis
- 63368 O Fallon
- 63369 Old Monroe
- 63370
- 63373 Portage Des Sioux
- 63376 Saint Peters
- 63377 Silex
- 63379 Troy
- 63381 Truxton
- 63382 Vandalia
- 63383 Warrenton
- 63384 Wellsville
- 63385 Wentzville
- 63386 West Alton
- 63387 Whiteside
- 63388 Williamsburg
- 63389 Winfield
- 63390 Wright City