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NAICS Codes
"The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy." (from the NAICS Home Page)
- North American Industry Classification System (NAICS)
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Locate NAICS codes to find similar businesses and industries.
SIC Codes
The Standard Industrial Classification (SIC) system classifies businesses by type of product or service. While this system has been replaced with the NAICS as of 1997, some directories still have SIC indexes.
- Standard Industrial Classification (Online), US Department of Labor, Occupational Safety & Health Administration.
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This government site allows the user to search the 1987 version SIC manual by keyword, to access descriptive information for a specified 2,3,4-digit SIC, and to examine the manual structure. - Standard Industrial Classification Manual, 1987Call Number: Carothers Govt. Pub. PREX 2.6/2:In 27/987
This is a government document prepared by the Executive Office of the President, Office of Management and Budget.