Barrios de Washington S
- Salmon Creek (7)
- Samish Hill (51)
- Sand Point (3)
- Scenic Hill (1)
- Seahurst (4)
- Seatac (10)
- Seattle Hill-Silver Firs (4)
- Seaview Seattle (2)
- Shadow Hawk (1)
- Shelby (2)
- Sheridan Beach (3)
- Sheridan Park (7)
- Shoultes (1)
- Silver Firs (1)
- Silver Lake (8)
- Smokey Point (7)
- South Auburn (8)
- South Beacon Hill (7)
- South Delridge (12)
- South End (37)
- South Forest Park (2)
- South Hill (5)
- South Hill (57)
- South Juanita (12)
- South Lake Union (82)
- South Lake Washington (1)
- South Lakes (4)
- South Olympia (18)
- South Park (4)
- South Renton (4)
- South Tacoma (41)
- South Westside (6)
- Southeast Bellevue (13)
- Southeast Redmond (13)
- Southern Heights-Boulevard Park (8)
- Southwest Bellevue (6)
- Springbrook Terrace (6)
- Springtree (2)
- Squak Mountain (1)
- Stadium District (44)
- Starcrest (6)
- Stevens (16)
- Summit (1)
- Summit Puyallup (3)
- Sunnyside (2)
- Sunnyside Vancouver (1)
- Sunset (9)
- Sunset Hill (4)
- Sycamore (1)