Top NAICS Codes in Illinois FY2023

Industries ranked by place-of-performance federal contract obligations in Illinois during fiscal year 2023.

Quick answer

NAICS 611519, OTHER TECHNICAL AND TRADE SCHOOLS, leads Illinois in FY2023 with $50,513,058 in ingested obligations.

Market Snapshot

Ranked contractors41
Top obligations$50,513,058
RankNAICSNAICS industryObligationsAwards
1611519OTHER TECHNICAL AND TRADE SCHOOLS$50,513,0581
2238220PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS$33,670,0291
3339999ALL OTHER MISCELLANEOUS MANUFACTURING$22,288,76615
4541511CUSTOM COMPUTER PROGRAMMING SERVICES$10,897,8351
5423850SERVICE ESTABLISHMENT EQUIPMENT AND SUPPLIES MERCHANT WHOLESALERS$7,822,4871
6236220COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION$5,441,9011
7541611ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES$3,308,5843
8423450MEDICAL, DENTAL, AND HOSPITAL EQUIPMENT AND SUPPLIES MERCHANT WHOLESALERS$3,204,168325
9334516ANALYTICAL LABORATORY INSTRUMENT MANUFACTURING$3,127,8502
10541715RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY)$2,643,2211
11923120ADMINISTRATION OF PUBLIC HEALTH PROGRAMS$2,277,9241
12237110WATER AND SEWER LINE AND RELATED STRUCTURES CONSTRUCTION$2,167,3221
13541690OTHER SCIENTIFIC AND TECHNICAL CONSULTING SERVICES$1,758,8562
14541330ENGINEERING SERVICES$1,361,9462
15541310ARCHITECTURAL SERVICES$1,117,6074
16541519OTHER COMPUTER RELATED SERVICES$1,055,3665
17561210FACILITIES SUPPORT SERVICES$887,4082
18541513COMPUTER FACILITIES MANAGEMENT SERVICES$769,2001
19334517IRRADIATION APPARATUS MANUFACTURING$688,7131
20325413IN-VITRO DIAGNOSTIC SUBSTANCE MANUFACTURING$475,8941
21611310COLLEGES, UNIVERSITIES, AND PROFESSIONAL SCHOOLS$430,8271
22811210ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE$375,3303
23334111ELECTRONIC COMPUTER MANUFACTURING$267,7242
24621512DIAGNOSTIC IMAGING CENTERS$251,8001
25562111SOLID WASTE COLLECTION$246,6011
26541380TESTING LABORATORIES AND SERVICES$231,5051
27811219OTHER ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE$212,2131
28541620ENVIRONMENTAL CONSULTING SERVICES$129,3641
29541714RESEARCH AND DEVELOPMENT IN BIOTECHNOLOGY (EXCEPT NANOBIOTECHNOLOGY)$119,3211
30332722BOLT, NUT, SCREW, RIVET, AND WASHER MANUFACTURING$117,9391
31238210ELECTRICAL CONTRACTORS AND OTHER WIRING INSTALLATION CONTRACTORS$111,6481
32337214OFFICE FURNITURE (EXCEPT WOOD) MANUFACTURING$89,2063
33541990ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES$54,9851
34562910REMEDIATION SERVICES$26,1911
35561720JANITORIAL SERVICES$24,4511
36339113SURGICAL APPLIANCE AND SUPPLIES MANUFACTURING$13,4861
37322121PAPER (EXCEPT NEWSPRINT) MILLS$12,2371
38541199ALL OTHER LEGAL SERVICES$11,7831
39516210MEDIA STREAMING DISTRIBUTION SERVICES, SOCIAL NETWORKS, AND OTHER MEDIA NETWORKS AND CONTENT PROVIDERS$9,9511
40541110OFFICES OF LAWYERS$9,9441
41325412PHARMACEUTICAL PREPARATION MANUFACTURING$131

Source: USAspending.gov. Last updated from ingested federal spending data: May 7, 2026.