National industry · NAICS 561621
Security Systems Services (except Locksmiths)
Registered companies
10,677
1,865 list it as their primary code, 7,578 are small under it
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SBA size standard
A business is small under 561621 at $25 million in average annual receipts.
13 CFR 121.201, receipts standards effective 17 March 2023.
Who buys it
$710.4M in federal contracts under 561621 in fiscal year 2026. Top agencies:
- Department of Defense$330.0M
- Department of Homeland Security$133.5M
- Department of Transportation$52.3M
- Department of Justice$52.0M
- Department of Veterans Affairs$51.5M
- Securities and Exchange Commission$15.0M
From USAspending.gov.
Contractors in this trade
Related codes in Investigation and Security Services
Open notices are SAM.gov opportunities whose response date hasn't passed. Contracts are federal awards ending in the next 2 years. Companies are active SAM.gov registrations. Counts refresh every few hours. Company names, contacts and contract holders are part of LevelRated Federal.