- Swansboro
- Swannanoa
- Swampscott
- Swainsboro
- Suwanee
- Sutton
- Sutter Creek
- Sutter
- Sutherlin
- Sussex
- Sussex
- Susquehanna Trails
- Susanville
- Surprise
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- Surfside
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- Superior
- Superior
- Superior
- Superior
- Sunset Hills
- Sunset Beach
- Sunset
- Sunset
- Sunset
- Sunrise Manor
- Sunrise
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- Sunnyvale
- Sunnyslope
- Sunnyslope
- Sunnyside
- Sunnyside
- Sunnyside
- Sunny Isles Beach
- Sunland Park
- Sunderland
- Suncook
- Suncoast Estates
- Sunbury
- Sunbury
- Sunapee
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- Sun Valley
- Sun Valley
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- Sun City West
- Sun City Center
- Sun City
- Sun City
- Sumter
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- Summit
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- Sugarland Run
- Sugarcreek
- Sugarcreek
- Sugar Land
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- Sugar Creek
- Suffolk
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- Sudden Valley
- Succasunna
- Sublimity
- Suamico
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- Sturgis
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