NAICS 541990 and PSC AZ12 contractors in Illinois

All Other Professional, Scientific, and Technical Services. R&D- OTHER RESEARCH AND DEVELOPMENT (APPLIED RESEARCH/EXPLORATORY DEVELOPMENT). Cross-code overlap in Illinois.

Illinois · NAICS 541990 · PSC AZ12

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$6,874,507,913

Buyer overlap

Top recipients

Visible recipients in the Illinois overlap of NAICS 541990 and PSC AZ12

Alion Science And Technology Corporation

Chicago, IL

Chicago, IL | 5 awards | Top agency Department of Defense | NAICS 541710

$887,975,018

Hii Mission Technologies CORP

Willowbrook, IL

Willowbrook, IL | 464 awards | Top agency Department of Defense | NAICS 541330

$5,986,532,895

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