Central Illinois Region
Central Region - Springfield Sub-Region
COUNTIES - Adams, Brown, Calhoun, Cass, Christian, Greene, Hancock, Jersey, Logan, Mason, Macoupin, Menard, Montgomery, Morgan, Pike, Sangamon, Schuyler and Scott
Central Region - Peoria Sub-Region
COUNTIES - Bureau, Fulton, Henderson, Henry, Knox, LaSalle, Marshall, McDonough, Mercer, Peoria, Putnam, Rock Island, Stark, Tazewell, Warren and Woodford
Central Region - Peoria & Champaign Sub-Regions
COUNTIES - Champaign, Clark, Coles, Cumberland, DeWitt, Douglas, Edgar, Ford, Iroquois, Livingston, Macon, McLean, Moultrie, Piatt, Shelby and Vermilion
