| Div
| Counties |
| A
|
McHenry, Lake, northern Cook (north of Cermak Road)
|
| B
|
Jo Daviess, Stephenson, Winnebago, Boone, Carroll, Ogle, DeKalb, Lee, Whiteside, Rock Island and Henry
|
| C
|
Kane, Du Page, Kendall, southern Cook (south of Cermak Road)
|
| D
|
Will and Grundy
|
| E
|
Bureau, Putnam, LaSalle, Livingston and Marshall
|
| F
|
Mercer, Henderson, Warren, Knox, Stark and Peoria
|
| G
|
Kankakee, Iroquois and Ford
|
| H
|
Woodford, Tazewell and McLean
|
| I
|
Mason, Menard, Logan, De Witt, Piatt and Macon
|
| J
|
Hancock, McDonough, Fulton, Schuyler, Adams, Brown and Cass
|
| K
|
Champaign and Vermillion
|
| L
|
Edgar, Clark, Douglas, Coles, Cumberland, Moultrie, Shelby and Christian
|
| M
|
Sangamon, Morgan, Scott, Pike, Calhoun and Greene
|
| N
|
Fayette, Effingham, Jasper, Crawford, Lawrence, Richland, Clay, Marion, Jefferson, Wayne, Edwards, Wabash, White, Hamilton, Franklin, Williamson, Saline, Gallatin, Hardin, Pope, Johnson and Massac
|
| O
|
Jersey, Macoupin, Montgomery, Bond, Madison, Clinton, St. Clair, Monroe, Washington, Randolph, Perry, Jackson, Union, Alexander and Pulaski
|
|
 |
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|
