St. Clair
- Alorton
- Avery Hill
- Belleville
- Birkner
- Bixby
- Bluffside
- Bohleysville
- Brooklyn
- Cahokia
- Caseyville
- Centreville
- Darmstadt
- Dupo
- Dutch Hollow
- East Carondelet
- East St. Louis
- Exermont
- Fairmont City
- Fairview Heights
- Falling Spring
- Fayetteville
- Floraville
- Freeburg
- Furman
- Gartside
- Hilltop
- Hollywood Heights
- Imbs
- Lebanon
- Lenzburg
- Marissa
- Mascoutah
- Miller
- Millstadt
- National City
- New Athens
- O'Fallon
- Oak Hills
- Ogles
- Paderborn
- Rentchler
- Roachtown
- Rodemich
- Royal Heights
- Sauget
- Scott AFB
- Shiloh
- Shiloh Station
- Signal Hill
- Smithton
- St. Libory
- Stolle
- Summerfield
- Swansea
- Tillman
- Washington Park
- Westview
- Wilderman
- Woodcrest