All Circle K Locations - Illinois
- Aledo
- Aroma Park
- Ashley
- Aurora
- Barrington
- Bartonville
- Batavia
- Beecher
- Belleville
- Belvidere
- Benton
- Berwyn
- Bloomington
- Bolingbrook
- Bourbonnais
- Bradley
- Braidwood
- Breese
- Bridgeview
- Buffalo
- Buffalo Grove
- Canton
- Carbondale
- Carthage
- Casey
- Champaign
- Chicago
- Chicago Ridge
- Chillicothe
- Countryside
- Crete
- Crystal Lake
- Dallas City
- Danville
- Darien
- Decatur
- Deer Park
- Des Plaines
- Dwight
- East Moline
- East Peoria
- Edwardsville
- Elgin
- Evergreen Park
- Fairview Heights
- Forsyth
- Frankfort
- Franklin Park
- Galesburg
- Geneva
- Glen Ellyn
- Grant Park
- Grayslake
- Gurnee
- Havana
- Hoffman
- Jacksonville
- Joliet
- Kankakee
- Lake Villa
- Lawrenceville
- Lincolnshire
- Lincolnwood
- Lisle
- Lockport
- Lombard
- Manteno
- Marseilles
- Matteson
- Mattoon
- Mokena
- Momence
- Montrose
- Morton
- Mount Vernon
- Mt Vernon
- Mundelein
- Murphysboro
- Naperville
- Newton
- Normal
- O'fallon
- Oak Brook
- Oak Lawn
- Oak Park
- Oswego
- Ottawa
- Palos Park
- Paris
- Pekin
- Peoria
- Peotone
- Plainfield
- Pocahontas
- Rantoul
- Rock Island
- Rockford
- Romeoville
- Roselle
- Saint Anne
- Saint Charles
- Salem
- Springfield
- Staunton
- Steger
- Streamwood
- Streator
- Taylorville
- Tilton
- Tinley Park
- Urbana
- Vandalia
- Virden
- Warrenville
- West Dundee
- West Peoria
- Westchester
- Wheaton
- Wilmington
- Woodridge
- Yorkville