- Scandinavia
- Schofield
- Shawano
- Sheboygan
- Sheboygan Falls
- Shiocton
- Shorewood
- Shorewood Hills
- Shullsburg
- Siren
- Sister Bay
- Slinger
- Soldiers Grove
- Solon Springs
- South Milwaukee
- South Wayne
- Spooner
- Spring Green
- Star Prairie
- Stetsonville
- Stevens Point
- Strum
- Sturgeon Bay
- Sturtevant
- Suamico
- Sun Prairie
- Superior Village
- Suring
- Sabin
- Sager Island