- Scout Island
- Scrogum Island
- Sea Lion Lake
- Sea Lion Lake
- Sechlerville
- Second Stony Island
- Sedgwick
- Seeley
- Seering Island
- Selchs Mobile Home Park
- Seminary Springs
- Seneca
- Sextonville
- Seymour
- Shady Dell
- Shady Nook Mobile Home Park
- Shamrock
- Shanagolden
- Shangri La Point
- Shantytown
- Sharon
- Shaw Landing
- Shawano
- Shawtown
- Sheboygan
- Sheboygan Falls
- Sheep Island
- Shelby
- Sheldon
- Shell Lake