Department of the Interior NAICS 541611 and PSC R425 contractors

Administrative Management and General Management Consulting Services. SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Cross-code overlap under Department of the Interior.

Department of the Interior · NAICS 541611 · PSC R425

Last updated: April 19, 2026

Visible recipients

Mapped obligations

$15,387,303,368

State overlap

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541611 and PSC R425

Icf Incorporated

Fairfax, VA

Fairfax, VA | 5 awards | Top agency Department of Health and Human Services | NAICS 541611

$3,084,174,617

Zantech It Services, Inc.

Reston, VA

Reston, VA | 51 awards | Top agency Department of Homeland Security | NAICS 541611

$242,518,401

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