Barrios de Wisconsin S
- Sak's Woods (8)
- Schmitt Park (2)
- Sheboygan Falls/Kohler (6)
- Sheridan Park (4)
- Sherman (8)
- Sherman Park (19)
- Sherman Terrace (3)
- Shorecrest (1)
- Shorewood/Whitefish Bay (4)
- Silver City (2)
- Silver Spring (5)
- Silverswan (2)
- Smith's Crossing (7)
- South Appleton (8)
- South Madison (12)
- South Pier (3)
- Southpoint (1)
- Springs (2)
- St Aemilian's (3)
- St Croix Far Eastern Suburbs (26)
- St Joseph's (1)
- St Peter's (1)
- Starlite (6)
- Stocker (1)
- Story Hill (3)
- Sturtevant (7)
- Sturtevant Village (3)
- Suburban Fond du Lac (9)
- Sunnyside South (1)
- Sunset Heights (1)
- Sunset Heights-Waukesha (2)
- Sunset Hills (1)
- Sunset Village (16)
- Swan Creek (1)
- Swift (3)