561621
SECURITY SYSTEMS SERVICES (EXCEPT LOCKSMITHS)
Explore federal contractors and contract awards classified under NAICS 561621. This industry code covers security systems services (except locksmiths) services and products in federal procurement.
Total Obligations
$2.3B
Lifetime contract value
Top Agencies
10
Buying in this NAICS
States Active
0
With contractors
Top Contractors in NAICS 561621
Highest-volume contractors by total obligations
No contractor data available.
View all contractors in this NAICSTop Buying Agencies
Federal agencies awarding contracts in NAICS 561621 (FY2025)
- 1Department of Defense202 awards
- 2Department of Homeland Security158 awards
- 3Department of Justice121 awards
- 4Department of Veterans Affairs109 awards
- 5Department of the Interior77 awards
- 6Department of State65 awards
- 7General Services Administration65 awards
- 8Department of Transportation47 awards
- 9Department of Agriculture28 awards
- 10Department of Health and Human Services24 awards
Related NAICS Codes
Other codes in the same industry group
561611
INVESTIGATION SERVICES
1,142 contractors
561612
SECURITY GUARDS AND PATROL SERVICES
972 contractors
561622
LOCKSMITHS
161 contractors
561613
ARMORED CAR SERVICES
61 contractors
Find Opportunities in NAICS 561621
GovCon in a Box helps you discover active contracting opportunities, research competitors, and position your business for federal contracts in security systems services (except locksmiths) and beyond.