Illinois Neighborhoods S
- Sauganash (3)
- Saukie (1)
- Schorsch Village (3)
- Signal Hill (3)
- Smith Park (29)
- South Chicago (47)
- South Deering (5)
- South East Villages (11)
- South Farnsworth (9)
- South Loop (315)
- South Pointe (1)
- South Shore (192)
- South Side (2)
- Southeast Aurora (5)
- Southeast Elgin-Cook (6)
- Southeast Elgin-Kane (2)
- Southwest Elgin (3)
- Southwest Rockford (7)
- Spring Brook Crossing (1)
- Spring Brook Estates (1)
- Spring Brook Golf Course (5)
- St Pat's (1)
- Steeple Run (2)
- Still Water (10)
- Streeterville (225)