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Home/Virginia/Department of Transportation/NAICS 561621

State + agency + NAICS page

Department of Transportation NAICS 561621 contractors in Virginia

Security Systems Services (except Locksmiths). Use this deeper state-buyer-industry page to see which visible contractors sit closest to this exact overlap in the public AwardRegistry layer.

Virginia + Department of Transportation
Last updated: April 8, 2026

Visible recipients

2

Mapped obligations

$1,374,811,941

Top PSC links

4

Top recipients

Visible recipients tied to Department of Transportation, Virginia, and NAICS 561621

Serco INC

Herndon, VA

Serco INC is a federal category business profile based in Herndon, VA. The current public data layer shows $1,004,172,019 in visible federal obligations across 1,016 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC R499.

$653,436,871

M. C. Dean, Inc.

Tysons, VA

M. C. Dean, Inc. is a federal category business profile based in Tysons, VA. The current public data layer shows $366,425,260 in visible federal obligations across 1,299 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC J058.

$721,375,070

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Open PSC R408

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Top recipient paths for PSC R499

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