Top NAICS Codes in Illinois FY2024

Industries ranked by place-of-performance federal contract obligations in Illinois during fiscal year 2024.

Quick answer

NAICS 541715, RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY), leads Illinois in FY2024 with $2,381,419,816 in ingested obligations.

Market Snapshot

Ranked contractors30

Top obligations$2,381,419,816

Rank	NAICS	NAICS industry	Obligations	Awards
1	541715	RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY)	$2,381,419,816	1
2	562910	REMEDIATION SERVICES	$66,721,567	1
3	336411	AIRCRAFT MANUFACTURING	$8,381,011	1
4	237310	HIGHWAY, STREET, AND BRIDGE CONSTRUCTION	$6,038,188	1
5	561720	JANITORIAL SERVICES	$5,717,786	1
6	561210	FACILITIES SUPPORT SERVICES	$4,563,534	3
7	511210	SOFTWARE PUBLISHERS	$4,340,909	1
8	541611	ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES	$3,861,879	1
9	339999	ALL OTHER MISCELLANEOUS MANUFACTURING	$3,578,878	2
10	621111	OFFICES OF PHYSICIANS (EXCEPT MENTAL HEALTH SPECIALISTS)	$3,210,926	1
11	325412	PHARMACEUTICAL PREPARATION MANUFACTURING	$3,149,837	4
12	423610	ELECTRICAL APPARATUS AND EQUIPMENT, WIRING SUPPLIES, AND RELATED EQUIPMENT MERCHANT WHOLESALERS	$2,042,500	1
13	541330	ENGINEERING SERVICES	$1,654,734	2
14	541519	OTHER COMPUTER RELATED SERVICES	$1,236,116	1
15	484210	USED HOUSEHOLD AND OFFICE GOODS MOVING	$998,560	2
16	325413	IN-VITRO DIAGNOSTIC SUBSTANCE MANUFACTURING	$692,936	2
17	336413	OTHER AIRCRAFT PARTS AND AUXILIARY EQUIPMENT MANUFACTURING	$536,174	3
18	337214	OFFICE FURNITURE (EXCEPT WOOD) MANUFACTURING	$384,542	2
19	522310	MORTGAGE AND NONMORTGAGE LOAN BROKERS	$256,337	1
20	333999	ALL OTHER MISCELLANEOUS GENERAL PURPOSE MACHINERY MANUFACTURING	$238,132	2
21	811310	COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT (EXCEPT AUTOMOTIVE AND ELECTRONIC) REPAIR AND MAINTENANCE	$197,080	2
22	561730	LANDSCAPING SERVICES	$177,170	1
23	541310	ARCHITECTURAL SERVICES	$142,463	1
24	517111	WIRED TELECOMMUNICATIONS CARRIERS	$130,948	1
25	811111	GENERAL AUTOMOTIVE REPAIR	$86,153	1
26	325411	MEDICINAL AND BOTANICAL MANUFACTURING	$85,025	4
27	423450	MEDICAL, DENTAL, AND HOSPITAL EQUIPMENT AND SUPPLIES MERCHANT WHOLESALERS	$68,546	12
28	811210	ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE	$46,930	1
29	311812	COMMERCIAL BAKERIES	$3,654	3
30	332510	HARDWARE MANUFACTURING	$827	1

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