The most populous cities in area code 217 are: Springfield, IL; Champaign, IL; Decatur, IL; Urbana, IL and Quincy, IL
Other cities in the 217 area code include: Danville, IL; Charleston, IL; Jacksonville, IL; Mattoon, IL; Lincoln, IL; Rantoul, IL; Effingham, IL; Chatham, IL; Taylorville, IL; Paris, IL; Savoy, IL; Mahomet, IL; Clinton, IL; Litchfield, IL; Hillsboro, IL; Beardstown, IL; Carlinville, IL; Pana, IL; Mount Zion, IL; Monticello, IL; Hoopeston, IL; Auburn, IL; Shelbyville, IL; Pittsfield, IL; Tuscola, IL; Paxton, IL; Sullivan, IL; Sherman, IL; Marshall, IL; Rochester, IL; Forsyth, IL; Georgetown, IL; Riverton, IL; Tolono, IL; Virden, IL; Gibson City, IL; Jacksonville, IL; Gillespie, IL; Westville, IL; Rushville, IL; Hamilton, IL; Arcola, IL; Lake of the Woods, IL and Casey, IL