| Region | Counties |
|---|
| Central | Cass, Christian, Greene, Logan, Macon, Macoupin, Menard, Montgomery, Morgan, Sangamon, Scott, and Shelby. |
| East Central | Champaign, Douglas, Ford, Iroquois, Piatt, and Vermilion. |
| North Central | DeWitt, Fulton, Livingston, Marshall, Mason, McLean, Peoria, Stark, Tazewell and Woodford. |
| Northeast | Cook, DeKalb, DuPage, Grundy, Lake, Kane, Kankakee, Kendall, McHenry, and Will. |
| Northern Stateline | Boone, Ogle, Stephenson and Winnebago. |
| Northwest | Jo Daviess, Carroll, Whiteside, Rock Island, Mercer, Henry, Bureau, Lee, Putnam and LaSalle counties. |
| Southeast | Clark, Clay, Coles, Crawford, Cumberland, Edgar, Effingham, Fayette, Jasper, Lawrence, Marion, Moultrie and Richland. |
| Southern | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson, Johnson, Massac, Perry, Pope, Pulaski, Saline, Union, Wabash, Wayne, White and Williamson. |
| Southwest | Bond, Calhoun, Clinton, Jersey, Madison, Monroe, Randolph, St. Clair and Washington. |
| West Central | Adams, Brown, Hancock, Henderson, Knox, McDonough, Pike, Schuyler and Warren. |