Federal Contract Intelligence by NAICS Code

NAICS 541519 is the catch-all for federal IT services not classified elsewhere — cybersecurity, managed security, help desk, IT consulting, network operations, cloud services, and IT product/reseller flow. Within the 5415 (Computer Systems Design & Related Services) industry group, it is the most active NAICS code by prime-contract award count in the trailing-12-month window.

NAICS 541512 covers federal contracts for systems integration, custom software development, IT architecture, and enterprise systems design. Contracts in this code typically involve designing, building, and integrating complex multi-component IT systems for civilian and defense agencies.

NAICS 541715 is the primary code for applied research and development in defense systems, space, energy, biomedical sciences, and national security. It encompasses FFRDCs, applied R&D firms, and university research performers. Within the 5417 (Scientific R&D Services) industry group, it is consistently among the top-ranked NAICS codes by prime-contract obligated value in the trailing-12-month window.

NAICS 236220 covers federal contracts for the construction of commercial, institutional, and government facilities — military bases, courthouses, hospitals, border facilities, embassies, and VA medical centers. DHS border infrastructure and DoD military construction dominate, with active competition across OCONUS and CONUS programs.

NAICS 541330 covers federal engineering services contracts spanning weapons systems, naval architecture, aerospace engineering, defense systems integration, civil and environmental engineering, and infrastructure design. DoD drives the overwhelming majority of spend, with program management and systems engineering as the dominant sub-segments.

NAICS 621111 covers federal contracts for physician services, clinical examinations, disability evaluations, and direct medical care services. VA dominates this NAICS code, using it primarily for disability compensation examinations (C&P exams), community care referrals, and veteran health assessment contracts.

NAICS 488190 covers federal contracts for aircraft maintenance, logistics support, airframe sustainment, and aviation operations support. DoD is the overwhelming buyer — covering everything from fixed-wing and rotary aircraft depot-level maintenance to base aviation operations and flight training support.

NAICS 611710 covers federal contracts for training development, curriculum design, instructional systems design (ISD), educational program support, test development, and workforce training delivery. DoD is the primary buyer, funding military training programs, PME (professional military education), and civilian workforce development.