Department of Homeland Security NAICS 541990 and PSC R499 contractors in Maryland

All Other Professional, Scientific, and Technical Services. SUPPORT- PROFESSIONAL: OTHER. Deepest cross-filter overlap.

Maryland · Department of Homeland Security

Last updated: April 17, 2026

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$561,742,493

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Visible recipients tied to Department of Homeland Security, Maryland, NAICS 541990, and PSC R499

Reli Group INC

Windsor Mill, MD

Windsor Mill, MD | 119 awards | Top agency Department of Health and Human Services | NAICS 541611

Asrc Federal Professional Services, LLC

Beltsville, MD

Beltsville, MD | 54 awards | Top agency Department of Defense | NAICS 561611

Ellumen, Inc.

Silver Spring, MD

Silver Spring, MD | 52 awards | Top agency Department of Defense | NAICS 541512

Analytica LLC

Bethesda, MD

Bethesda, MD | 103 awards | Top agency Department of the Treasury | NAICS 541512

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