- Seneacquoteen
- Setters
- Settlers Island
- Sharon
- Sheep Island
- Shelley
- Shells Lick
- Shellworth Island
- Sherwin
- Sherwood Beach
- Shiloh
- Ship Island
- Shoreline Drive Summer Home Area
- Shoshone
- Shoup
- Sign Island
- Silver Beach
- Silver City
- Silver Sands Beach
- Silver Star
- Silvertip Landing
- Silverton
- Simplot
- Sinclair
- Slabtown
- Slacks Corner
- Slate Creek
- Slickpoo
- Slocum
- Smaq'wqn Hill