2007 NAICS Definitions

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.


Go to: No change 2002 to 2007 No change 1997 to 2002 2002 Economic Census and other data sources

2007
NAICS		2002
NAICS		1997
NAICS		 Corresponding Index Entries
561611561611 561611 Detective agencies
561611561611 561611 Fingerprint services
561611561611 561611 Investigation services (except credit), private
561611561611 561611 Investigators, private
561611561611 561611 Lie detection services
561611561611 561611 Missing person tracing services
561611561611 561611 Polygraph services
561611561611 561611 Private detective services
561611561611 561611 Private investigation services (except credit)
561611561611 561611 Skip tracing services