- Sadorus
- Sadorus township
- St. Anne Township
- St Anne
- St. Charles Township
- St. Charles
- St. Clair
- St David
- St Elmo
- St Francisville
- St. Jacob Township
- St Jacob
- St Johns
- St Joseph
- St. Joseph Township
- St Libory
- St Mary
- St Peter
- Salem township
- Salem
- Salem
- Salina
- Saline
- Sand Prairie
- Sand Ridge
- Sandoval Township
- Sandoval
- Sandwich Township
- Sandwich
- Sangamon
- Santa Anna
- Santa Fe
- Saratoga
- Sauget
- Sauk Village
- Saunemin Township
- Saunemin
- Savanna Township
- Savanna
- Savoy
- Sawyerville
- Saybrook
- Scales Mound
- Scales Mound township
- Schaumburg Township
- Schaumburg
- Schiller Park
- Sciota Township
- Sciota
- Scotland
- Scott
- Secor
- Sefton
- Senachwine
- Seneca
- Seneca
- Serena
- Serena Township
- Sesser
- Seward
- Seward
- Seymour
- Shabbona Township
- Shabbona
- Sharon
- Shawneetown
- Sheffield
- Shelbyville township
- Shelbyville
- Sheldon
- Sheldon Township
- Sheridan
- Sheridan
- Sherman
- Sherman
- Sherrard
- Shields
- Shiloh
- Shiloh
- Shiloh Valley
- Shipman township
- Shipman
- Shoal Creek
- Shorewood
- Sibley
- Sidell township
- Sidell
- Sidney
- Sidney Township
- Silver Creek
- Silvis
- Simpson
- Simpson Precinct
- Six Mile
- Skokie
- Sleepy Hollow
- Smithboro
- Smithfield
- Smithton township
- Smithton
- Somer
- Somerset
- Somonauk
- Somonauk township
- Songer
- Sonora
- Sorento
- South Barrington
- South Beloit
- South Chicago Heights
- South Dixon
- South Elgin
- South Fork
- South Holland
- South Homer
- South Jacksonville
- South Jacksonville No. 1
- South Jacksonville No. 2
- South Jacksonville No. 3
- South Jacksonville No. 4
- South Litchfield
- South Macon
- South Moline
- South Ottawa
- South Pekin
- South Rock Island
- South Ross
- South Roxana
- South Wheatland
- Southern
- Southern View
- Southwest
- Sparland
- Sparta
- Sparta precinct
- Sparta
- Spring
- Spring Bay Township
- Spring Creek
- Spring Garden
- Spring Grove
- Spring Grove
- Spring Lake
- Spring Valley
- Springfield
- Springfield Township
- Squaw Grove
- Stanford
- Stanford
- Staunton Township
- Staunton
- Steeleville
- Steeleville Precinct
- Steger
- Sterling Township
- Sterling
- Steuben
- Stewardson
- Stickney Township
- Stickney
- Stillman Valley
- Stockton
- Stockton Township
- Stokes
- Stone Church
- Stone Park
- Stonefort township
- Stonefort
- Stonefort
- Stonington Township
- Stonington
- Stookey
- Strasburg
- Streamwood
- Streator
- Streator
- Stronghurst township
- Stronghurst
- Sublette
- Sublette Township
- Suez
- Sugar Creek
- Sugar Grove
- Sugar Grove Township
- Sugar Loaf
- Sullivan
- Sullivan Township
- Sullivan
- Sullivant
- Summit
- Summit
- Summit Argo
- Sumner
- Sumner
- Sumpter
- Sun River Terrace
- Sunfield
- Sunnyland
- Swansea
- Sycamore
- Sycamore Township
- Symmes
Illinois Homes for sale & real estate cities starting with "S"
Illinois Cities starting With "S"
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