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Business Research Guide: SIC and NAICS codes

This guide highlights core print and electronic Library resources in the area of Business and it links to relevant web resources. Use this guide as your starting point, come to the library or Ask a Librarian for more resources and further help.


Brief Descriptions of SIC and NAICS codes

SIC: The Standard Industrial Classification System (SIC) “attempts to classify all business establishments by the types of products or services they make available. Establishments engaged in the same activity, whatever their size or type of ownership, are assigned the same SIC code.”  (Moss & Strauss, 2004)

On April 9, 1997, the Office of Management and Budget (OMB) announced the adoption of a new industry classification replacing the Standard Industrial Classification (SIC)” The objectives of the 1997 revision were to identify new industries and to recognize the system according to a more consistent economic principle, according to the types of production activities performed rather than the mixture of production-based and market- based categories in SIC.” (Moss & Strauss, 2004)

NAICS and SIC online

· North American Industry Classification System (NAICS)
NAICS is a 5- or 6-digit code developed jointly by the U.S., Canada, and Mexico. The international NAICS agreement fixes the first five digits. The sixth digit, when used, identifies subdivisions of NAICS industries that accommodate needs of individual countries.
Databases that are searchable by NAICS are: ABI/Inform Complete, Business Source Complete  (Advanced Search option, scroll all the way down, you will find NAICS/ Indusrtry Code)

· Standard Industrial Classification (SIC) System Search
SIC codes are 4 digits.
You may also consult the SIC manual to check the SIC division structure 

· NAICS/SIC Codes Lookup and Conversion Table


Moss, R. W., & Strauss, D. W. (2004). Strauss's handbook of business information: A guide for librarians, students, and researchers (2nd ed.). Westport, CT: Libraries Unlimited.