- Saum
- Sawbill Landing
- Sawyer
- Sax
- Scandia
- Schechs Mill
- Schley
- Schmidts Island
- Schoolcraft Island
- Schroeder
- Schultz Trailer Park
- Scott
- Scott Junction
- Scotts Corner
- Scranton
- Scribner
- Searles
- Secluded Acres
- Second Island
- Second Island
- Section Thirty
- Sedil
- Serpent Lake Mobile Home Park
- Seven Islands
- Seven Sisters Islands
- Sexton Island
- Sha-Sha Resort
- Shady Acre Mobile Home Park
- Shady Island
- Shady Island