Top NAICS Codes in Connecticut FY2021

Industries ranked by place-of-performance federal contract obligations in Connecticut during fiscal year 2021.

Quick answer

NAICS 541519, OTHER COMPUTER RELATED SERVICES, leads Connecticut in FY2021 with $42,699,461 in ingested obligations.

Market Snapshot

Ranked contractors26
Top obligations$42,699,461
RankNAICSNAICS industryObligationsAwards
1541519OTHER COMPUTER RELATED SERVICES$42,699,46140
2541712RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT BIOTECHNOLOGY)$30,814,9821
3623220RESIDENTIAL MENTAL HEALTH AND SUBSTANCE ABUSE FACILITIES$21,489,5361
4541330ENGINEERING SERVICES$15,988,8584
5336413OTHER AIRCRAFT PARTS AND AUXILIARY EQUIPMENT MANUFACTURING$15,710,8895
6541110OFFICES OF LAWYERS$9,708,0292
7523110INVESTMENT BANKING AND SECURITIES DEALING$4,452,0771
8923120ADMINISTRATION OF PUBLIC HEALTH PROGRAMS$3,651,9961
9332991BALL AND ROLLER BEARING MANUFACTURING$3,605,4563
10333298ALL OTHER INDUSTRIAL MACHINERY MANUFACTURING$1,517,7982
11562910REMEDIATION SERVICES$337,3151
12611699ALL OTHER MISCELLANEOUS SCHOOLS AND INSTRUCTION$240,1641
13541199ALL OTHER LEGAL SERVICES$236,0821
14334516ANALYTICAL LABORATORY INSTRUMENT MANUFACTURING$225,0001
15336412AIRCRAFT ENGINE AND ENGINE PARTS MANUFACTURING$219,9841
16561730LANDSCAPING SERVICES$114,7351
17333244PRINTING MACHINERY AND EQUIPMENT MANUFACTURING$93,2963
18561621SECURITY SYSTEMS SERVICES (EXCEPT LOCKSMITHS)$89,6541
19561611INVESTIGATION AND PERSONAL BACKGROUND CHECK SERVICES$77,9381
20811310COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT (EXCEPT AUTOMOTIVE AND ELECTRONIC) REPAIR AND MAINTENANCE$62,5082
21541513COMPUTER FACILITIES MANAGEMENT SERVICES$48,9121
22335311POWER, DISTRIBUTION, AND SPECIALTY TRANSFORMER MANUFACTURING$44,1621
23238220PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS$8,8001
24334290OTHER COMMUNICATIONS EQUIPMENT MANUFACTURING$6,0001
25326199ALL OTHER PLASTICS PRODUCT MANUFACTURING$5,0001
26339113SURGICAL APPLIANCE AND SUPPLIES MANUFACTURING$1,8301

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