Cities, towns and communities in St. Clair County, Illinois
Areas related by mapped geography to St. Clair County, Illinois.
- Belleville city, IL
- Brooklyn village, IL
- Cahokia Heights city, IL
- Caseyville village, IL
- Collinsville city, IL
- Columbia city, IL
- Darmstadt CDP, IL
- Dupo village, IL
- East Carondelet village, IL
- East St. Louis city, IL
- Fairmont City village, IL
- Fairview Heights city, IL
- Fayetteville village, IL
- Floraville CDP, IL
- Freeburg village, IL
- Hecker village, IL
- Lebanon city, IL
- Lenzburg village, IL
- Madison city, IL
- Marissa village, IL
- Mascoutah city, IL
- Millstadt village, IL
- New Athens village, IL
- New Baden village, IL
- O'Fallon city, IL
- Paderborn CDP, IL
- Rentchler CDP, IL
- St. Libory village, IL
- Sauget village, IL
- Scott AFB CDP, IL
- Shiloh village, IL
- Smithton village, IL
- Summerfield village, IL
- Swansea village, IL
- Washington Park village, IL