Place
- Skokie, Illinois1
- Sleepy Hollow, Illinois1
- Solon Mills, Illinois1
- South Barrington, Illinois1
- South Chicago Heights, Illinois1
- South Elgin, Illinois1
- South Holland, Illinois1
- Spring Grove, Illinois1
- St. Charles, Illinois1
- Steger, Illinois1
- Stickney, Illinois1
- Stone Park, Illinois1
- Streamwood, Illinois1
- Sugar Grove, Illinois1
- Summit, Illinois1
- Sunnyland, Illinois1
- Symerton, Illinois1
- Third Lake, Illinois1
- Thornton, Illinois1
- Tinley Park, Illinois1