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Federal Contractor Ranking

Top 50 Federal Contractors in Illinois

The 50 largest federal contractors headquartered in Illinois by total obligated dollars (FY2016–FY2026), based on recipient state address from USAspending.gov.

𝕏in
50
Contractors Ranked
$110B
Combined Obligated
Contractors headquartered in Illinois
Cohort
RankContractorTotal Obligated
🥇
Uchicago Argonne, LLC

UEI JA8EP8EKX8Y9

$11B
🥈
Northrop Grumman Systems Corporation

UEI E4X3BLZPPPX3

$8.6B
🥉
Bp Products North America INC.

UEI RDHYLFA8JAB4

$8.4B
#4
W S Darley & CO

UEI TENRPZGMAGJ6

$6.7B
#5
Cardinal Health 200, LLC

UEI ZJEUBM5FYLQ2

$6.6B
#6
Cdw Government LLC

UEI PHZDZ8SJ5CM1

$6.3B
#7
Fermi Research Alliance, LLC

UEI E1EUJL3KLKX5

$4.6B
#8
Supplycore LLC

UEI HTYJC5P9ZMH5

$4.4B
#9
Hii Mission Technologies Corp

UEI GS7HBMNZEMK3

$3.6B
#10
Medline Industries, LP

UEI DMPAKJ9N9K66

$3.2B
#11
Ddb Chicago INC.

UEI ZYCVPMAU6MH8

$2.7B
#12
Great Lakes Dredge & Dock CO, LLC

UEI M9LFLA6K8HE4

$2.7B
#13
Walsh Federal LLC

UEI DMFWBVTL9324

$2.6B
#14
Fermi Forward Discovery Group, LLC

UEI VLS6K3EVCMW5

$2.5B
#15
W.w. Grainger, INC.

UEI DBQGN324ULK3

$2.2B
#16
Aar Government Services, INC.

UEI GFWVNNYFEVR2

$2.1B
#17
Dms Pharmaceutical Group INC

UEI PX72BSBQTKJ3

$2.1B
#18
Walgreen CO.

UEI HRE3UMLEM2P5

$2.0B
#19
Caterpillar INC

UEI C9C6HPQLL4A8

$1.9B
#20
US Foods INC

UEI HZYTJENLLM81

$1.9B
#21
General Dynamics Ordnance & Tactical Systems, INC.

UEI D6BENLPTJ8H6

$1.8B
#22
Sonova USA INC

UEI N5VSMWF4G7K7

$1.8B
#23
National Opinion Research Center

UEI MPYFY5UMSDP4

$1.7B
#24
Archer Western Federal Jv

UEI C277DHXWNTU9

$1.5B
#25
Covenant Aviation Security, LLC

UEI C8GANE5B4W83

$1.4B
#26
Aar Supply Chain, INC

UEI TWJNLZXJ39F1

$1.3B
#27
Kay And Associates, INC.

UEI NHQJPMYJEVJ9

$1.3B
#28
Walsh - Turner Jv Ii

UEI MKEHYFKZMB23

$955M
#29
Abbott Laboratories INC.

UEI NH3LDK8CFAK7

$907M
#30
Serco-ips Corporation

UEI RGEBPDP8RV96

$900M
#31
Archer-daniels-midland Company

UEI N1EULGPZUSK3

$876M
#32
Richard Group LLC

UEI QST7A5N63TL4

$796M
#33
Nd Defense LLC

UEI NAX6BAMAUNG9

$697M
#34
Wieland Rolled Products North America, LLC

UEI LCCMM1A56RP1

$696M
#35
Cherry Meat Packers, INC

UEI VKTSH6PAV4N4

$666M
#36
Paragon Micro INC

UEI E41LV9AJGHQ1

$645M
#37
Walsh Construction Company Ii, LLC

UEI N64NCQ58JL25

$634M
#38
Olin Corp

UEI LLJEMMN9E1G7

$628M
#39
Jones Lang Lasalle Americas, INC.

UEI RJ7MF1XTJN88

$547M
#40
Siemens Industry INC

UEI JZXZSN3BBL98

$546M
#41
Washington Group/alberici Joint Venture

UEI MUSXVFYMGC14

$533M
#42
Luhr Bros., INC.

UEI UBFLQ7H2KN58

$432M
#43
Phonak L L C

UEI CC4WA5DWJL16

$390M
#44
Exp Federal INC.

UEI LJJ6DGARYF48

$377M
#45
Pernix International, LLC

UEI PJ63GJ3LMJJ4

$366M
#46
Ac Jv One LLC

UEI N6CTZBFDV5J6

$366M
#47
Woodward, INC.

UEI L4UCL5K5H5J9

$364M
#48
Incobrasa Industries LTD

UEI CSRFGBYGE7N5

$360M
#49
Vista Defense Technologies, LLC

UEI UM22ZL79EQ53

$351M
#50
Belleville Shoe Manufacturing Company

UEI CFGLCJAJKT86

$337M

Source: USAspending.gov, FY2016–FY2026. Mindy aggregates by contractor legal name and rolls up parent + subsidiary UEI relationships. Click any row to view full contracting profile.

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