State + NAICS page

NAICS 541611 contractors in Illinois

Administrative Management and General Management Consulting Services. Use this state-scoped industry page to see which visible federal contractors carry the clearest footprint in this NAICS lane inside Illinois.

State: Illinois

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$89,525,347

Buyer overlap

Top recipients

Visible recipients tied to NAICS 541611 in Illinois

Alion Science And Technology Corporation

Chicago, IL

Alion Science And Technology Corporation is a federal category business profile based in Chicago, IL. The current public data layer shows $1,391,195,185 in visible federal obligations across 5 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541710 (Research and Development in the Physical, Engineering, and Life Sciences). The profile also shows meaningful product and service activity in PSC AZ12.

$89,525,347