Department of the Interior NAICS 541990 and PSC R431 contractors

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: HUMAN RESOURCES. Cross-code overlap under Department of the Interior.

Department of the Interior · NAICS 541990 · PSC R431

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$836,797,694

State overlap

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541990 and PSC R431

Calibre Systems INC

Alexandria, VA

Alexandria, VA | 125 awards | Top agency Department of Defense | NAICS 541990

$825,815,325

Koniag Emerging Technologies LLC

Anchorage, AK

Anchorage, AK | 22 awards | Top agency Department of State | NAICS 541512

$7,508,272

West 4th Strategy, LLC

Mc Lean, VA

Mc Lean, VA | 90 awards | Top agency Department of Justice | NAICS 541611

$3,474,097

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