- Salceca North
- Salem
- Salem
- Salina
- Saline
- Saline City
- Saline Landing
- Salisbury
- Saluda
- Sammons Point
- Samoth
- Samsville
- Samuel A Rothermel Houses
- Samuelson Corners
- San Jose
- Sand Bar Island
- Sand Barrens
- Sand Island
- Sand Ridge
- Sand Ridge
- Sandburn
- Sanders Crossing
- Sanders Estates
- Sanders Prairie
- Sandersville
- Sandoval
- Sands
- Sandusky
- Sandwich
- Sangamon