Piercing itt: Illinois
Legnépesebb városok itt: Illinois
ChicagoAuroraRockfordJolietNapervilleSpringfield (Illinois)PeoriaNorth PeoriaElginWaukeganCiceroChampaignBloomingtonDecaturArlington HeightsEvanstonSchaumburgBolingbrookPalatineSkokieDes PlainesOrland ParkTinley ParkOak LawnBerwynMount ProspectWheatonNormalHoffman EstatesOak ParkDowners GroveGlenview