Place
- Illinois--Riverton1
- Illinois--Rochester1
- Illinois--Saint Elmo1
- Illinois--San Jose1
- Illinois--Sandoval1
- Illinois--Sangamon County1
- Illinois--Seneca1
- Illinois--Shelby County1
- Illinois--Sidell1
- Illinois--Somonauk1
- Illinois--South Wilmington1
- Illinois--Standard1
- Illinois--Stephen County1
- Illinois--Stockton1
- Illinois--Stonington1
- Illinois--Stronghurst1
- Illinois--Table Grove1
- Illinois--Taylor Springs1
- Illinois--Tremont1
- Illinois--Ullin1