2017 NAICS Definition

T = Canadian, Mexican, and United States industries are comparable.

561611 Investigation Services

This U.S. industry comprises establishments primarily engaged in providing investigation and detective services.

Illustrative Examples:

Fingerprinting services
Private detective services
Polygraph services
Private investigative services


Cross-References.
  • Establishments primarily engaged in providing credit checks are classified in Industry 561450, Credit Bureaus.
2007
NAICS		   2012
NAICS		   2017
NAICS		   Corresponding Index
Entries
561611   561611   561611   Background check services
561611   561611   561611   Bounty hunting services
561611   561611   561611   Detective agencies
561611   561611   561611   Fingerprint services
561611   561611   561611   Investigation services (except credit), private
561611   561611   561611   Investigators, private
561611   561611   561611   Lie detection services
561611   561611   561611   Missing person tracing services
561611   561611   561611   Polygraph services
561611   561611   561611   Private detective services
561611   561611   561611   Private investigation services (except credit)
561611   561611   561611   Skip tracing services