- Shaker Pines
- Silvermine Acres
- Simsbury
- Smut Island (historical)
- South Glastonbury
- South Wethersfield
- Southington
- Spoonville
- Spring Village
- Stillmans Corner
- Sandy Beach
- Sharon Valley
- Sodom
- South Canaan
- South Ellsworth
- South Norfolk
- Strong Island
- Salt Island
- Saybrook Point
- Scovill Landing
- Scraggy Island
- Shailerville
- Skinnerville
- South Farms
- Stone Island
- Sachem Head
- Saint Helena Island
- Savin Rock
- Sea Bluff
- Seaview Beach