S
- (Ashley County) Skyline Ridge
- (Arkansas County) Slaughter
- (Baxter County) Sloan Landing
- (Arkansas County) Smith Crossroads
- (Baxter County) Smith Hill
- (Baxter County) Smith Landing
- (Ashley County) Smith Mill Farms
- (Arkansas County) Smyrna Landing
- (Baxter County) Smithfield Acres
- (Baxter County) Snug Harbor
- (Ashley County) Snug Hill
- (Arkansas County) South Bowers
- (Ashley County) South Wilmington
- (Ashley County) Southwood
- (Arkansas County) Southwood Acres Mobile Home Park
- (Baxter County) Spring Brook Forest
- (Arkansas County) Spring Hill
- (Baxter County) Spring Lake
- (Ashley County) Spring Valley
- (Baxter County) Springfield Crossroads
- (Baxter County) Springfield Farms Addition
- (Arkansas County) Spruance City
- (Baxter County) Stage Mobile Home Village
- (Ashley County) Stage Road Development
- (Ashley County) Stanton Estates
- (Arkansas County) Star Hill
- (Arkansas County) Star Hill Village
- (Baxter County) Star Landing
- (Ashley County) Stave Landing
- (Baxter County) Staytonville