Illinois business markets
102 counties, 19 NAICS sectors. Click any county to see all sectors, or pick a sector below to browse statewide.
Sectors
- Agriculture, Forestry, Fishing and Hunting
- Mining, Quarrying, and Oil and Gas Extraction
- Utilities
- Construction
- Wholesale Trade
- Information
- Finance and Insurance
- Real Estate and Rental and Leasing
- Professional, Scientific, and Technical Services
- Management of Companies and Enterprises
- Administrative and Support and Waste Management Services
- Educational Services
- Health Care and Social Assistance
- Arts, Entertainment, and Recreation
- Accommodation and Food Services
- Other Services (except Public Administration)
- Manufacturing
- Retail Trade
- Transportation and Warehousing
Counties (by population)
- Cook County · pop 5,185,812
- DuPage County · pop 927,263
- Lake County · pop 711,885
- Will County · pop 698,450
- Kane County · pop 516,097
- McHenry County · pop 311,366
- Winnebago County · pop 283,289
- Madison County · pop 264,631
- St. Clair County · pop 254,777
- Champaign County · pop 206,098
- Sangamon County · pop 195,217
- Peoria County · pop 179,831
- McLean County · pop 170,882
- Rock Island County · pop 142,995
- Kendall County · pop 135,053
- Tazewell County · pop 130,555
- LaSalle County · pop 109,049
- Kankakee County · pop 106,833
- Macon County · pop 102,591
- DeKalb County · pop 100,512
- Vermilion County · pop 73,179
- Williamson County · pop 66,902
- Adams County · pop 65,166
- Whiteside County · pop 55,192
- Boone County · pop 53,316
- Grundy County · pop 52,920
- Jackson County · pop 52,706
- Ogle County · pop 51,536
- Knox County · pop 49,294
- Henry County · pop 48,948
- Coles County · pop 46,689
- Macoupin County · pop 44,566
- Stephenson County · pop 44,042
- Woodford County · pop 38,348
- Franklin County · pop 37,541
- Marion County · pop 37,294
- Clinton County · pop 36,899
- Jefferson County · pop 36,808
- Livingston County · pop 35,659
- Monroe County · pop 34,969
- Effingham County · pop 34,505
- Lee County · pop 34,058
- Christian County · pop 33,684
- Fulton County · pop 33,259
- Bureau County · pop 33,027
- Morgan County · pop 32,621
- Randolph County · pop 30,142
- Montgomery County · pop 28,078
- Logan County · pop 27,870
- McDonough County · pop 27,102
- Iroquois County · pop 26,746
- Saline County · pop 23,387
- Jo Daviess County · pop 21,918
- Fayette County · pop 21,380
- Jersey County · pop 21,336
- Shelby County · pop 20,867
- Perry County · pop 20,810
- Douglas County · pop 19,686
- Crawford County · pop 18,588
- Hancock County · pop 17,434
- Union County · pop 16,972
- Piatt County · pop 16,702
- Edgar County · pop 16,637
- Bond County · pop 16,627
- Warren County · pop 16,576
- Wayne County · pop 15,994
- Richland County · pop 15,675
- Carroll County · pop 15,621
- Mercer County · pop 15,619
- De Witt County · pop 15,461
- Clark County · pop 15,328
- Lawrence County · pop 15,137
- Pike County · pop 14,625
- Moultrie County · pop 14,469
- Massac County · pop 13,958
- White County · pop 13,708
- Washington County · pop 13,682
- Ford County · pop 13,396
- Johnson County · pop 13,350
- Clay County · pop 13,173
- Mason County · pop 12,878
- Cass County · pop 12,826
- Menard County · pop 12,169
- Greene County · pop 11,837
- Marshall County · pop 11,715
- Wabash County · pop 11,199
- Cumberland County · pop 10,378
- Jasper County · pop 9,233
- Hamilton County · pop 7,972
- Schuyler County · pop 6,826
- Brown County · pop 6,320
- Henderson County · pop 6,284
- Edwards County · pop 6,118
- Putnam County · pop 5,600
- Stark County · pop 5,324
- Pulaski County · pop 5,074
- Alexander County · pop 5,042
- Gallatin County · pop 4,857
- Scott County · pop 4,847
- Calhoun County · pop 4,406
- Pope County · pop 3,757
- Hardin County · pop 3,623