Barrios de Wisconsin S
- Sak's Woods (8)
- Schmitt Park (2)
- Sheboygan Falls/Kohler (8)
- Sheridan Park (3)
- Sherman (6)
- Sherman Park (14)
- Sherman Terrace (4)
- Shorecrest (1)
- Shorewood/Whitefish Bay (4)
- Silver City (5)
- Silver Spring (11)
- Silverswan (2)
- Smith's Crossing (6)
- South Appleton (9)
- South Lake (1)
- South Madison (7)
- South Pier (3)
- Southpoint (1)
- Springs (2)
- St Aemilian's (1)
- St Croix Far Eastern Suburbs (23)
- St Joseph's (3)
- St Peter's (2)
- Starlite (7)
- Stocker (1)
- Story Hill (2)
- Sturtevant (8)
- Sturtevant Village (4)
- Suburban Fond du Lac (9)
- Sunnyside (1)
- Sunnyside South (1)
- Sunset Heights (1)
- Sunset Hills (1)
- Sunset Village (19)
- Swan Creek (1)
- Swift (3)