NAICS 561621

Security Systems Services (except Locksmiths)

15 open opportunities · Browse open bids →

Federal agencies have awarded 1,843 contracts worth $722M to 452 recipients under NAICS 561621 (Security Systems Services (except Locksmiths)). Below are the top recipients, the agencies buying most under this code, and current open solicitations.

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Top 10 Recipients (last 12 months)

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Top 5 Buying Agencies (last 12 months)

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Small Business Set-Aside Programs

8(a) Business Development$51M · 149
Service-Disabled Veteran-Owned$9.3M · 50
Small Business$12.8M · 30
Veteran-Owned Small Business$182K · 5
Women-Owned Small Business$505K · 4
Indian / Tribal$708K · 2
HUBZone$128K · 1

Spending by Fiscal Year

FY 2026$205.4M · 365 awards
FY 2025$467.5M · 1,290 awards
FY 2024$49M · 188 awards

Where the Work Happens

CA$203.3M · 182
DC$96.9M · 230
MD$68.5M · 216
MA$59.9M · 68
VA$48.1M · 74
MI$42.7M · 46

Federal Contracting under NAICS 561621

Across all years, federal agencies have obligated $722M to 452 vendors under NAICS 561621 (Security Systems Services (except Locksmiths)), an average of $392K per award. In FY2026, $205.4M was awarded across 365 contract actions. Around 13% of awards under this code went to small businesses through programs such as 8(a) Business Development, Service-Disabled Veteran-Owned, Small Business. The largest buyer is Department of Defense. Most of the work is performed in CA and DC. Browse open bids →

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