- Sunnidale
- Sunnidale Corners
- Sunset Beach
- Sylvan Glen Beach
- Sioux Lookout
- Smiths Falls
- Smooth Rock Falls
- South Bruce Peninsula
- St. Catharines
- St. Marys
- St. Thomas
- Sundridge
- Schreiber
- Scoble West
- Sellars
- Slate River Valley
- South Gillies
- Stanley
- Sutton Bay
- Sabourins Crossing
- Sand Bay Corner
- Scotch Point
- Seeley
- Selton
- Shanes
- Sheatown
- Sheldon's Corners
- Sherwood Springs
- Soperton
- South Augusta