Sloan, Iowa – Samuel Sloan (railroad official) Sloansville, New York – John R. Sloan (settler) Sloat, California – John D. Sloat (Naval commodore who claimed California for the United States) Sly Park, California – James Sly (pioneer) Smartsville, California – Jim Smart (Gold Rush settler and merchant) Smethport, Pennsylvania – Theodore Smeth (friend of proprietor) Smith's Ferry, California – James Smith (founder) Smith Center, Kansas – J. Nelson Smith (soldier) (indirectly, via Smith County) Smithfield, Maine – Rev. Henry Smith (settler) Smithfield, New York – Peter Smith Smithfield, North Carolina – John Smith (state legislator) Smithflat, California – Jeb Smith (pioneer rancher) Smith River (Montana) – Robert Smith (Secretary of State) Smithtown, New York – Richard Smith (proprietor) Smithville, Missouri – Humphrey Smith (settler) Smithville, New York – Jesse Smith (lumber dealer) Snydertown, Northumberland County, Pennsylvania – Gov. Simon Snyder Soddy-Daisy, Tennessee – William Sodder (trading post proprietor) and Daisy Parks (daughter of a coal company manager) Solon, Maine and Solon, New York – Solon (statesman and poet of Ancient Greece) Somers, Connecticut – Lord John Somers of England Somers, New York – Capt. Richard Somers Somersville, California – Francis Somers (coal mine founder) Somerville, Massachusetts – Capt. Richard Somers Soperton, Georgia – Benjamin Franklin Soper (railroad engineer) South Amboy, New Jersey – James Drummond, 4th Earl of Perth (The article The Amboys contains the etymology) South Anna River (Virginia) – Anne, Queen of Great Britain South Burlington, Vermont – Richard Boyle, 3rd Earl of Burlington (indirectly, via Burlington, Vermont) South Carolina – Charles I of England (King of Great Britain, Carolinus is Latin for Charles) South Euclid, Ohio – Euclid (Greek mathematician) South Padre Island, Texas – José Nicolás Ballí (Padre Ballí) (Catholic priest and settler) South Thomaston, Maine – General John Thomas (indirectly, via Thomaston, Maine) Spafford, New York – Horatio Spafford Spalding Tract, California – John S. Spalding (founder) Sparks, Nevada – John Sparks Spearville, Kansas – Alden Speare (resident of Boston) Spencer, Indiana – Capt. Spier Spencer Spencer, Massachusetts – Spencer Phips (acting governor of Massachusetts) Spencerport, New York – William H. Spencer (settler) Spivey, Kansas – R.M. Spivey (landowner) Sprague, Washington – General John W. Sprague (railroad executive) Spreckels, California – Claus Spreckels (sugar magnate) Stacy, California – Stacy Spoon Stafford, Humboldt County, California – Judge Cyrus G. Stafford Stafford, Kansas – Lewis Stafford (soldier) Standish, California and Standish, Maine – Myles Standish Stanfield, Oregon