Business listing by county and name in Illinois (IL):

 Cook County:

 DuPage County:

 Lake County:

 Will County:

 Kane County:

 Winnebago County:

 McHenry County:

 Madison County:

 Peoria County:

 Sangamon County:

 Saint Clair County:

 Champaign County:

 Rock Island County:

 La Salle County:

 McLean County:

 Kankakee County:

 Macon County:

 Tazewell County:

 DeKalb County:

 Williamson County:

 Jackson County:

 Kendall County:

 Coles County:

 Monroe County:

 Adams County:

 Montgomery County:

 Vermilion County:

 Whiteside County:

 Henry County:

 Marion County:

 Franklin County:

 Macoupin County:

 Knox County:

 Effingham County:

 Jefferson County:

 Stephenson County:

 Ogle County:

 Morgan County:

 Grundy County:

 Christian County:

 Livingston County:

 Bureau County:

 Shelby County:

 Saline County:

 Douglas County:

 Jersey County:

 Richland County:

 McDonough County:

 Fulton County:

 Edgar County:

 Boone County:

 Warren County:

 Randolph County:

 Lee County:

 Crawford County:

 Wayne County:

 Jo Daviess County:

 Schuyler County:

 Fayette County:

 White County:

 Logan County:

 Wabash County:

 Moultrie County:

 Dewitt County:

 Piatt County:

 Perry County:

 Clinton County:

 Massac County:

 Woodford County:

 Lawrence County:

 Bond County:

 Hancock County:

 Pike County: