50
100
150
200
250
300
350
400
450
50
100
150
200
250
300
350
400
450
500
0
Chicago
Rockford
Freeport
Elgin
Naperville
Aurora
Joliet
Chicago Heights
Kankakee
Pontiac
Bloomington
Peoria
Galesburg
Rock Island
Kewanee
Canton
Havana
Macomb
Quincy
★
Springfield
Beardstown
Decatur
Urbana-Champaigne
Charleston
Pana
Vandalia
Centralia
East St Louis
Alton