The 100 Largest Companies In Illinois For 2019

Chris Kolmar
by Chris Kolmar
Biggest Companies, Rankings - 6 months ago

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If you live in Illinois and you’re looking for a job, you have come to the right place.

Because, sure, you can google things like ‘biggest companies in Illinois’ and get a fairly long list of companies with a lot of employees, or perhaps that have the biggest names — but here, we bring you the companies with the most current employees that are actually headquartered in Illinois.

Below, we’ll give you a complete list of Illinois’s 100 largest companies, but first, here’s a look at the top 10:

  1. McDonald’s
  2. Walgreens
  3. Sears Holdings
  4. Caterpillar
  5. United Airlines
  6. Mondelēz International
  7. JLL
  8. Abbott
  9. John Deere
  10. ITW

McDonald’s comes in at the top, with more current employees than any other company in the . We’ll get to specifics in a moment; first, here’s a look at our methodology.

How we identified the biggest companies in Illinois

Here at Zippia we have developed a database of over 250,000 companies that spans the entire country.

For this report, we looked at the companies headquartered in Illinois with at least 100 employees. That left us with 1,514 companies.

We then ranked each company from most to least current employees to determine the biggest companies in Illinois.

As it turns out, McDonald’s looks to the be the biggest company in Illinois clocking in with 375,000 employees.

Now, check out how the 100 biggest companies in Illinois ranked.

If you’re interested, you can read more about the Illinois job scene here:

Detailed List Of The 100 Biggest Companies In Illinois

Rank Company City Employees
1 McDonald’s Oak Brook 375,000
2 Walgreens Deerfield 253,400
3 Sears Holdings Hoffman Estates 140,000
4 Caterpillar Deerfield 95,400
5 United Airlines Chicago 90,600
6 Mondelēz International Deerfield 90,000
7 JLL Chicago 77,300
8 Abbott North Chicago 75,000
9 John Deere Moline 56,767
10 ITW Glenview 50,000
11 Upp Technology Villa Park 50,000
12 Baxter International Deerfield 48,000
13 Hyatt Chicago 45,000
14 Allstate Northbrook 43,275
15 LKQ Chicago 42,500
16 Exelon Chicago 34,396
17 Veolia Environmental Services Northbrook 32,950
18 Tenneco Lake Forest 32,000
19 Elite Staffing Chicago 32,000
20 ADM Chicago 31,800
21 Jewel-Osco Chicago 30,000
22 Dover Downers Grove 29,000
23 AbbVie Lake Bluff 29,000
24 Durham School Services Lisle 26,151
25 McDermott Will & Emery Chicago 25,000
26 US Foods Rosemont 25,000
27 Grainger Lake Forest 25,000
28 Stericycle Lake Forest 25,000
29 Arthur J Gallagher & Co Itasca 24,790
30 Northwestern Medicine Chicago 24,507
31 Fortune Brands Home & Security Deerfield 22,700
32 The Owens Group Chicago 22,500
33 LSC Communications Chicago 22,000
34 Ulta Beauty Bolingbrook 21,700
35 Aldi Batavia 20,335
36 Follett Westchester 18,542
37 SP+ Chicago 18,117
38 Dominick’s Finer Foods Inc Oak Brook 18,000
39 Reyes Holdings Rosemont 17,792
40 Northern Trust Chicago 17,600
41 Advocate Health Care Downers Grove 17,470
42 BMO Harris Bank Chicago 16,889
43 Transdev North America Lombard 16,470
44 TreeHouse Foods Oak Brook 16,027
45 Discover Riverwoods 15,549
46 OSF HealthCare Peoria 15,488
47 Brunswick Lake Forest 14,415
48 Health Care Service Corporation Chicago 14,264
49 Motorola Solutions Chicago 14,000
50 Komatsu Rolling Meadows 14,000
51 Packaging Corporation of America Lake Forest 14,000
52 University of Illinois at Chicago Chicago 13,380
53 Addus HomeCare Downers Grove 12,760
54 Aptar Crystal Lake 12,700
55 Conagra Brands Chicago 12,600
56 Conagra Brands Chicago 12,400
57 Bally Total Fitness Chicago 12,340
58 The University of Chicago Chicago 12,320
59 Flex-N-Gate Urbana 12,150
60 Pactiv Lake Forest 12,000
61 Medline Industries Northfield 12,000
62 Navistar Lisle 11,926
63 ClearStaff Chicago 11,500
64 Amsted Industries Chicago 11,000
65 Ingredion Westchester 11,000
66 MAT Holdings Long Grove 11,000
67 TDS Corporate Chicago 10,300
68 Littelfuse Chicago 10,300
69 Sara Lee Downers Grove 10,001
70 Hill-Rom Chicago 10,000
71 Alight Solutions Lincolnshire 10,000
72 OSI Group Aurora 9,200
73 SNI Companies Chicago 9,000
74 HAVI Downers Grove 9,000
75 RSM US Chicago 9,000
76 Adtalem Global Education Downers Grove 8,956
77 CDK Global Hoffman Estates 8,900
78 Anixter Glenview 8,900
79 CDW Vernon Hills 8,787
80 Univar Downers Grove 8,700
81 Zurich Insurance Schaumburg 8,518
82 RQA Orland Park 8,500
83 Andy Frain Services Aurora 8,500
84 PSAV Inc Schiller Park 8,350
85 Groupon Chicago 8,323
86 Tribune Media Chicago 8,200
87 Fontana America Elgin 8,200
88 Middleby Elgin 8,026
89 Knowles Itasca 8,000
90 Innovel Solutions Hoffman Estates 8,000
91 Trustmark Lake Forest 7,872
92 Hearthside Food Solutions Downers Grove 7,850
93 CHICAGO TRANSIT AUTHORITY Chicago 7,500
94 Oscar Mayer Foods Corp Chicago 7,500
95 Euromarket Designs Inc Northbrook 7,500
96 Potbelly Chicago 7,400
97 Camping World Lincolnshire 7,366
98 Grant Thornton Chicago 7,257
99 IDEX Lake Forest 7,158
100 Koch Foods Park Ridge 7,103

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