630
- 63005 Chesterfield
- 63010 Arnold
- 63011 Ballwin
- 63012 Barnhart
- 63013 Beaufort
- 63014 Berger
- 63015 Catawissa
- 63016 Cedar Hill
- 63017 Chesterfield
- 63019 Crystal City
- 63020 De Soto
- 63021 Ballwin
- 63023 Dittmer
- 63025 Eureka
- 63026 Fenton
- 63028 Festus
- 63030 Fletcher
- 63031 Florissant
- 63033 Florissant
- 63034 Florissant
- 63036 French Village
- 63037 Gerald
- 63038 Wildwood
- 63039 Gray Summit
- 63040 Wildwood
- 63041 Grubville
- 63042 Hazelwood
- 63043 Maryland Heights
- 63044 Bridgeton
- 63045 Earth City
- 63047 Hematite
- 63048 Herculaneum
- 63049 High Ridge
- 63050 Hillsboro
- 63051 House Springs
- 63052 Imperial
- 63053 Kimmswick
- 63055 Labadie
- 63056 Leslie
- 63057
- 63060 Lonedell
- 63061 Luebbering
- 63068 New Haven
- 63069 Pacific
- 63070 Pevely
- 63071 Richwoods
- 63072 Robertsville
- 63073 Saint Albans
- 63074 Saint Ann
- 63077 Saint Clair
- 63079 Stanton
- 63080 Sullivan
- 63084 Union
- 63087 Valles Mines
- 63088 Valley Park
- 63089 Villa Ridge
- 63090 Washington
- 63091 Rosebud