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