NAICS Code 56161 Investigation, Guard, and Armored Car Services


Administrative and Support and Waste Management and Remediation Services


This industry comprises establishments primarily engaged in providing one or more of the following: (1) investigation and detective services; (2) guard and patrol services; and (3) picking up and delivering money, receipts, or other valuable items with personnel and equipment to protect such properties while in transit.

Cross References

Establishments primarily engaged in
  • Providing credit checks: classified in Industry 56145, Credit Bureaus
  • Selling, installing, monitoring, and maintaining security systems and devices (e.g., burglar and fire alarm systems): classified in Industry 56162, Security Systems Services.

Illustrative Examples

  • Security guard services
  • Polygraph services
  • Bodyguard services
  • Private detective services
  • Armored car services

Industry Leaders