Barrios de Oregon S
- Sabin (4)
- Sabin-Irvington (2)
- Santa Clara (4)
- Sellwood-Moreland (29)
- Sexton Mountain (9)
- Sherwood/Tualatin North (7)
- Sherwood/Tualatin South (18)
- Sommerset West-Elmonica South (10)
- South Beaverton (4)
- South Burlingame (2)
- South Central (13)
- South Eliot (2)
- South End (1)
- South Gateway (14)
- South Hillsboro (5)
- South Portland (16)
- South Salem (5)
- South Tabor (3)
- South University (21)
- South Waterfront (10)
- Southeast Bend (1)
- Southeast Eugene (8)
- Southeast Hillsboro (6)
- Southeast Mill Creek (7)
- Southeast Salem (1)
- Southeast Uplift (2)
- Southern Crossing (13)
- Southgate (7)
- Southwest Bend (11)
- Southwest Hills (10)
- Springfield Gateway (8)
- St Johns (18)
- Stafford-Tualatin Valley (1)
- Sullivan's Gulch (10)
- Summit West (11)
- Sumner (2)
- Sunnyside (8)
- Sunnyside Damascus (7)
- Sunnyslope (10)
- Sunset (1)
- Sylvan-Highlands (4)