Barrios de Wisconsin S
- Sak's Woods (10)
- Schmitt Park (2)
- Seymour Park (1)
- Sheboygan Falls/Kohler (6)
- Sheridan Park (6)
- Sherman (8)
- Sherman Park (5)
- Sherman Terrace (3)
- Shorecrest (1)
- Shorewood/Whitefish Bay (1)
- Silver City (4)
- Silver Spring (7)
- Silverswan (2)
- Smith's Crossing (7)
- South Appleton (9)
- South Lake (1)
- South Madison (6)
- South Pier (3)
- Southpoint (3)
- Springs (3)
- St Croix Far Eastern Suburbs (22)
- St Joseph's (6)
- St Peter's (2)
- Starlite (7)
- Stocker (2)
- Story Hill (1)
- Sturtevant (8)
- Sturtevant Village (1)
- Suburban Fond du Lac (9)
- Sunset Heights (3)
- Sunset Heights-Waukesha (1)
- Sunset Hills (1)
- Sunset Village (10)
- Swan Creek (2)
- Swift (3)