- Sarona
- Saturday Islands
- Sauk Trail Beach
- Saunders
- Sauntry
- Saxeville
- Saxon
- Saylesville
- Saylesville
- Sayner
- Schey Acres
- Schmidt Corner
- Schmidt Island
- Schnappsville
- Schneyville
- School Hill
- Schultz
- Scott Island
- Scotts Junction
- Scout Island
- Scrogum Island
- Sea Lion Lake
- Sea Lion Lake
- Sechlerville
- Second Stony Island
- Sedgwick
- Seeley
- Seering Island
- Selchs Mobile Home Park
- Seminary Springs