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Home/Illinois/NAICS 541990/PSC Y1BA

State + NAICS + PSC page

NAICS 541990 and PSC Y1BA contractors in Illinois

All Other Professional, Scientific, and Technical Services. CONSTRUCTION OF AIR TRAFFIC CONTROL TOWERS. Cross-code overlap in Illinois.

Illinois · NAICS 541990 · PSC Y1BA

Last updated: April 7, 2026

Visible recipients

1

Mapped obligations

$243,209,271

Buyer overlap

4

Top recipients

Visible recipients in the Illinois overlap of NAICS 541990 and PSC Y1BA

Walsh Federal LLC

Chicago, IL

Chicago, IL | 169 awards | Top agency Department of Defense | NAICS 236220

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Top recipient paths -- ranked view
Illinois NAICS 541990 -- drop PSC filter
Illinois PSC Y1BA -- drop NAICS filter
Department of Defense -- buyer path
Department of Transportation -- buyer path
Department of Homeland Security -- buyer path
General Services Administration -- buyer path