S
- Sacksonia
- Sadie
- Sadou
- Sailes
- Saint Amant
- Saint Benedict
- Saint Bernard
- Saint Clair
- Saint Claire
- Saint Elmo
- Saint Francisville
- Saint Gabriel
- Saint Genevieve
- Saint James
- Saint Joe
- Saint John
- Saint Joseph
- Saint Landry
- Saint Louis
- Saint Malo
- Saint Martinville
- Saint Maurice
- Saint Rest
- Saint Rosalie
- Saint Rose
- Saint Tammany
- Saint Tammany Corner
- Saint Thomas
- Saint Vincent
- Saline
- Salix
- Salsburg
- Sambo
- Sampusand
- Samstown
- Samtown
- Sandel
- Sand Spur
- Sanial
- Sarah
- Sarah Plantation
- Saranac
- Sardis
- Sardis
- Sarepta
- Satsuma
- Savage Fork
- Savoie
- Savoy
- Scarsdale
- Schriever
- Schwab
- Scotlandville
- Scott
- Scottsville
- Seabrook
- Seale
- Searcy
- Security
- Selma
- Serena
- Shadow Pine Estates
- Shady
- Shady Grove
- Shady Oaks
- Shadyside
- Shamrock
- Sharkey
- Sharon
- Sharp
- Sharp Town
- Shaw
- Shear
- Shelburn
- Shell Beach
- Sheltons
- Shenandoah
- Sherburne
- Sheridan
- Sherwood
- Shexnayder
- Shiloh
- Shiloh
- Shipp
- Shongaloo
- Shoreline
- Shreveport
- Shuteston
- Sibley
- Sicard
- Sicily Island
- Sieper
- Sikes
- Siloam Springs
- Silverwood
- Simmesport
- Simmons Settlement
- Simms
- Simpson
- Simsboro
- Singer
- Skidder
- Ski Stone
- Slacks
- Slagle
- Slaughter
- Slidell
- Sligo
- Slocum
- Slone
- Smithfield
- Smithland
- Smoke Bend
- Smurney
- Smyrna
- Soco
- Socola
- Solitude
- Solley Hill
- Somerset
- Sondheimer
- Sorrel
- Sorrento
- Soulouque
- South Bend
- Southdown
- Southern Gardens
- South Mansfield
- South Pass
- South Point
- Southport
- South Shore Estates
- South Vacherie
- Sparks
- Sparta
- Spaulding
- Spearsville
- Spencer
- Spillman
- Spokane
- Spring Bayou Landing
- Springcreek
- Springfield
- Springhill
- Spring Hill
- Spring Lake
- Spring Ridge
- Spring Ridge
- Spring Ridge
- Springville
- Spyker
- Squealer Point Landing
- Stacy
- Stampley
- Standard
- Stanley
- Stanley
- Staples
- Star
- Starhill
- Starks
- Starns
- Start
- State Line
- Stay
- Stegall
- Stein
- Stekey
- Stella
- Stephenville
- Sterlington
- Stevenson
- Stille
- Stonewall
- Stoney Point
- Storyville
- Strader
- Suburban North
- Sugar Creek
- Sugar Creek Crossroads
- Sugartown
- Sulphur
- Sumerall
- Summerfield
- Summerville
- Summit
- Sun
- Sunnybrook Farms
- Sunny Hill
- Sunrise
- Sunrise
- Sunset
- Sunshine
- Sunshine
- Superior
- Supreme
- Suqrue
- Swampers
- Swartz
- Swayzee Lake
- Sweet Home
- Sweet Lake
- Swift
- Swords