- Silverside
- Silverside Heights
- Silview
- Simonds Gardens
- Six Forks
- Skyline Crest
- Skyline Orchard
- Skyline Ridge
- Slaughter
- Slaughter Beach
- Sloan Landing
- Smith Crossroads
- Smith Hill
- Smith Landing
- Smith Mill Farms
- Smithfield Acres
- Smyrna
- Smyrna Landing
- Snug Harbor
- Snug Hill
- South Bethany
- South Bowers
- South Wilmington
- Southwood
- Southwood Acres Mobile Home Park
- Spring Brook Forest
- Spring Hill
- Spring Lake
- Spring Valley
- Springfield Crossroads