Administrative and Support Services
NAICS 561612: Security Guards and Patrol Services
NAICS 561612 is the North American industry classification for security guards and patrol services, within the Administrative and Support Services sector (NAICS 56). Government buyers tag contract opportunities with this code, and vendors list it in their registrations so matching tenders get routed to them.
Last updated: 2026-06-12
What this code covers
Providing guard and patrol services for facilities, events, and persons.
If this code describes the activity that generates most of your revenue, it is a candidate for your primary NAICS code; if it covers adjacent work you genuinely perform, list it as a secondary code. In US federal contracting, the NAICS code on a solicitation also fixes the SBA size standard that decides whether your firm counts as a small business for that competition.
72 open tenders with NAICS 561612 right now
- 36C78626Q50126 Unarmed Security Bakersfield NC -- S206VETERANS AFFAIRS, DEPARTMENT OF.VETERANS AFFAIRS, DEPARTMENT OF.NATIONAL CEMETERY ADMIN (36C786)USA · CAClosing date TBD
- USM Paris, FranceSTATE, DEPARTMENT OF.STATE, DEPARTMENT OF.ACQUISITIONS - AQM MOMENTUMUSAClosing date TBD
- S--SECURITY SERVICES EROSINTERIOR, DEPARTMENT OF THE.US GEOLOGICAL SURVEY.OFC OF ACQUSITION GRANTS-NATIONALUSAClosing date TBD
- Contract Security Guard (CSG) Services for U.S. Forces Korea (USFK)DEPT OF DEFENSE.DEPT OF THE ARMY.AMC.ACC.ACC-OO.411TH CSB.0411 AQ HQ CONTRACT AUGUSAClosing date TBD
- USACE Galveston District Jadwin Building Security and Law Enforcement ServicesDEPT OF DEFENSE.DEPT OF THE ARMY.US ARMY CORPS OF ENGINEERS.ENGINEER DIVISION SOUTHWESTERN.ENDIST GALVESTON.W076 ENDIST GALVESTONUSAClosing date TBD
Showing the 5 closing soonest of 72 open tenders carrying this code.
Using this code in Canada
NAICS is jointly maintained by the United States, Canada, and Mexico, so 561612 means the same thing on both sides of the border. Canadian federal tenders on CanadaBuys, however, are primarily categorized with UNSPSC codes (and legacy GSINs), so Canadian suppliers should identify their UNSPSC categories as well — see the GSIN code lookup and the GSIN explainer.
Related codes and tools
Code definition: NAICS 2022 v1 (curated 173). NAICS is maintained by the US Census Bureau, Statistics Canada, and INEGI and is in the public domain. This page is general information, not legal advice.