Find your NAICS and SIC codes
North American Industry Classification System (NAICS)
Published on-line by the Economic Census. Contains detailed descriptions and a searchable index for the 2017, 2012, 2007, 2002 and 1997 NAICS Manuals.
Standard Industrial Classification System (SIC)
Site maintained by the United States Department of Labor Contains detailed descriptions and a searchable index for the 1987 version SIC manual.
