561612 — Security Guards and Patrol Services
Description
This U.S. industry comprises establishments primarily engaged in providing guard and patrol services, such as bodyguard, guard dog, and parking security services (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Establishments primarily engaged in picking up and delivering money, receipts, or other valuable items are
- classified in U.S. Industry 561613, Armored Car Services;
- Establishments primarily engaged in selling, installing, monitoring, and maintaining security systems and
- devices, such as burglar and fire alarms and locking devices, are classified in Industry 56162, Security
- Systems Services; and
- Government establishments primarily engaged in criminal and civil law enforcement, police, traffic safety,
- and similar activities related to the enforcement of law are classified in Industry 922120, Police Protection.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 7381 - Detective, Guard, and Armored Car Services (via SIC1987:7381→NAICS1997:561612→2002:561612→2007:561612→2012:561612→2017:561612→2022:561612)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC R430 — SUPPORT- PROFESSIONAL: PHYSICAL SECURITY AND BADGING
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 561612 valid in 2022? ▾
Yes, 561612 is a valid 6-digit 2022 NAICS national industry code representing 'Security Guards and Patrol Services' under Sector 56 in the official classification index.
What is the SBA size standard for NAICS code 561612? ▾
The Small Business Administration (SBA) has established a small business size standard of $29,000,000 for NAICS code 561612 (Security Guards and Patrol Services), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 561612? ▾
According to official Census Bureau concordance tables, NAICS code 561612 (Security Guards and Patrol Services) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 7381 - Detective, Guard, and Armored Car Services.
Related Pages & Tools
Further regulatory reference links for NAICS code 561612:
- Sector 56 Directory Hub — List of related industries in the Administrative and Support and Waste Management and Remediation Services sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 561612 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Security Guards and Patrol Services).
- IRS PBA Code for Security Guard Services — Principal Business Activity tax reporting details.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.