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Business Frequently Asked Questions: SIC & NAICS Codes

This a guide to frequently asked business questions

How Do I find SIC & NAICS Codes?

SIC (Standard Industrial Classification) and NAICS (North American Industrial Classification System) Codes
In order to find out the competition for a certain company or to compare company performance against industry performance, the SIC or the NAICS for a company is necessary as most basic business references are organized by these numbers.


  • North American industry classification system : United States, 2002.
  • Standard Industrial Classification Manual, 1987.  
    Both volumes are kept at the Research Center Desk