Department of the Interior PSC R425 contractors

SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Contractors in this PSC lane under Department of the Interior.

Agency: Department of the Interior

Last updated: April 19, 2026

Visible recipients

Mapped obligations

$37,456,056,091

Visible recipients tied to Department of the Interior and PSC R425

Mead & Hunt INC

Middleton, WI

Middleton, WI | 13 awards | Top agency Department of Defense | NAICS 541310

Parsons Corporation

Chantilly, VA

Chantilly, VA | 5 awards | Top agency General Services Administration | NAICS 561210

Booz Allen Hamilton Engineering Services, LLC

Annapolis Junction, MD

Annapolis Junction, MD | 11 awards | Top agency Department of Defense | NAICS 541330

Northrop Grumman Technical Services, Inc.

Mclean, VA

Mclean, VA | 26 awards | Top agency Department of Defense | NAICS 488190

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