Barrios de Washington S
- Salmon Creek (6)
- Samish Hill (43)
- Sand Point (3)
- Scenic Hill (1)
- Seahurst (3)
- Seatac (8)
- Seattle Hill-Silver Firs (4)
- Seaview Seattle (1)
- Seward Park (3)
- Shelby (2)
- Sheridan Beach (3)
- Sheridan Park (6)
- Silver Firs (1)
- Silver Lake (8)
- Smokey Point (5)
- South Auburn (7)
- South Beacon Hill (4)
- South Bellingham (1)
- South Delridge (10)
- South End (32)
- South Forest Park (2)
- South Hill (3)
- South Hill (41)
- South Juanita (15)
- South Lake Union (79)
- South Lake Washington (1)
- South Lakes (4)
- South Olympia (15)
- South Park (4)
- South Renton (4)
- South Tacoma (43)
- South Union (1)
- South Westside (8)
- Southeast Bellevue (9)
- Southeast Redmond (12)
- Southern Heights-Boulevard Park (6)
- Southwest Bellevue (9)
- Springbrook Terrace (4)
- Springtree (2)
- Stadium District (48)
- Starcrest (7)
- Stevens (12)
- Summit (1)
- Summit Puyallup (3)
- Sunnyside (1)
- Sunnyside Vancouver (1)
- Sunset (9)
- Sunset Hill (1)
- Sycamore (1)