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
15
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 Defense2,053 awards
- 2Department of Veterans Affairs720 awards
- 3Department of Justice647 awards
- 4Department of Homeland Security549 awards
- 5General Services Administration428 awards
- 6Department of State395 awards
- 7Department of the Interior323 awards
- 8Department of Transportation239 awards
- 9Department of the Treasury123 awards
- 10Department of Health and Human Services119 awards
Contractors by State
Distribution of NAICS 561621 contractors across states
Browse all statesRelated NAICS Codes
Other codes in the same industry group
INVESTIGATION SERVICES
1,142 contractors
SECURITY GUARDS AND PATROL SERVICES
972 contractors
LOCKSMITHS
161 contractors
ARMORED CAR SERVICES
61 contractors
Recent Contract Awards
Latest contract transactions in NAICS 561621
Unknown Recipient
Department of Veterans Affairs
MI | Dec 4, 2025
$-6K
Unknown Recipient
Department of the Interior
FL | Dec 4, 2025
$8K
Unknown Recipient
Department of Veterans Affairs
MI | Dec 4, 2025
$5K
Unknown Recipient
Department of Transportation
IL | Dec 4, 2025
$4K
Unknown Recipient
Department of the Interior
CA | Dec 4, 2025
$11K
Unknown Recipient
Department of Homeland Security
DC | Dec 4, 2025
$0
Unknown Recipient
Department of Transportation
CA | Dec 4, 2025
$0
Unknown Recipient
Department of Health and Human Services
OR | Dec 4, 2025
$0
Unknown Recipient
Department of Transportation
IN | Dec 4, 2025
$0
Unknown Recipient
Department of Veterans Affairs
TN | Dec 4, 2025
$3K
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.