NAICS Code 561612 — Security Guards and Patrol Services

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 3 national industries under 56161 (Investigation, Guard, and Armored Car Services).

Code	561612
Title	Security Guards and Patrol Services
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	$29 million in average annual receipts

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in providing guard and patrol services, such as bodyguard, guard dog, and parking security services.

Cross-References.

Is a business under 561612 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 561612 qualifies as a small business if it does not exceed $29 million in average annual receipts. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — receipts are averaged over the latest 5 fiscal years.

Where 561612 sits in the hierarchy

Level	Code	Title
Sector	56	Administrative and Support and Waste Management and Remediation Services
Subsector	561	Administrative and Support Services
Industry Group	5616	Investigation and Security Services
NAICS Industry	56161	Investigation, Guard, and Armored Car Services
National Industry	561612	Security Guards and Patrol Services

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
7381	Detective, Guard, and Armored Car Services

Related National Industry codes

• 561611 — Investigation and Personal Background Check Services
• 561613 — Armored Car Services

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.