S Cities in Illinois

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113 Illinois cities and towns start with S, from Sadorus to Symerton. The largest is Springfield, with an estimated 112,949 people in July 2024, per the US Census Bureau.

Sadorus Sailor Springs Salem San Jose Sandoval Sandwich Sauget Sauk Village Saunemin Savanna Savoy Sawyerville Saybrook Scales Mound Schaumburg Schiller Park Schram City Sciota Scottville Seaton Seatonville Secor Seneca Sesser Shabbona Shannon Shawneetown Sheffield Shelbyville Sheldon Sheridan Sherman Sherrard Shiloh Shipman Shorewood Shumway Sibley Sidell Sidney Sigel Silvis Simpson Sims Skokie Sleepy Hollow Smithboro Smithfield Smithton Somonauk Sorento South Barrington South Beloit South Chicago Heights South Elgin South Holland South Jacksonville South Pekin South Roxana South Wilmington Southern View Sparland Sparta Spaulding Spillertown Spring Bay Spring Grove Spring Valley Springerton Springfield St. Anne St. Augustine St. Charles St. David St. Elmo St. Francisville St. Jacob St. Johns St. Joseph St. Libory St. Peter Standard Standard City Stanford Staunton Ste. Marie Steeleville Steger Sterling Steward Stewardson Stickney Stillman Valley Stockton Stone Park Stonefort Stonington Stoy Strasburg Strawn Streamwood Streator Stronghurst Sublette Sugar Grove Sullivan Summerfield Summit Sumner Sun River Terrace Swansea Sycamore Symerton