- Six Lakes
- Skandia
- Skandia Station
- Skanee
- Skeels
- Skidmore
- Skidway Lake
- Skookum
- Skull Island
- Skyline Village
- Slapneck
- Slaybaugh Corner
- Sleepy Hollow
- Slocum
- Smith Crossing
- Smith Island
- Smiths Creek
- Smiths Island
- Smithville
- Smithwick Island
- Smyrna
- Snake Island
- Snake Island
- Snake Island
- Snover
- Snow
- Snowshoe
- Snowville
- Snug Harbor
- Snug Harbor