Barrios de Wisconsin S
- Sak's Woods (11)
- Schmitt Park (3)
- Servite Woods (1)
- Seymour Park (4)
- Sheboygan Falls/Kohler (6)
- Sherman (10)
- Sherman Park (8)
- Sherman Terrace (6)
- Shorecrest (1)
- Shorewood/Whitefish Bay (3)
- Silver City (1)
- Silver Spring (14)
- Silverswan (2)
- Smith's Crossing (7)
- South Appleton (17)
- South Lake (3)
- South Madison (18)
- South Pier (1)
- Southgate (1)
- Southpoint (2)
- Springs (3)
- St Aemilian's (1)
- St Croix Far Eastern Suburbs (43)
- St Joseph's (10)
- St Peter's (2)
- Starlite (10)
- Stocker (2)
- Story Hill (1)
- Sturtevant (6)
- Sturtevant Village (2)
- Suburban Fond du Lac (12)
- Sunset Heights (4)
- Sunset Hills (1)
- Sunset Village (7)
- Swan Creek (1)
- Swift (2)