- Salmon (Population: 3,122)
- Sandpoint (Population: 6,835)
- Shelley (Population: 3,813)
- Shoshone (Population: 1,398)
- Soda Springs (Population: 3,381)
- Spirit Lake (Population: 1,376)
- St. Anthony (Population: 3,342)
- St. Maries (Population: 2,652)
- Star (Population: 1,795)
- Sugar City (Population: 1,242)
- Sun Valley (Population: 1,427)
