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This guide shows resources for business topics related to marketing.


The Standard Industrial Classification (SIC) and North American Industry Classification System (NAICS) are numerical classification systems created by the United States government.  These systems are used to group/classify like companies into industries for the purposes of collecting, analyzing, and publishing statistical data related to the U.S. business economy. The SIC system was originally developed in the 1930s and was last updated in 1987.  The NAICS system was first released in 2002, updated in 2007 and last updated in 2012. 

While NAICS has "officially" replaced SIC, many business directories and databases still use one or both of the systems.  Therefore, it is important to know about both SIC and NAICS.

  • The Standard Industrial Classification (SIC) consists of four digit numbers that apply to a company based on the type of products or services it produces.
    • An example of an SIC Code is:  5812 = Eating Places
  • The newer North American Industry Classification System (NAICS) employs six digits to allow for a more detailed system of industry classification. 
    • An example of a NAICS Code is: 722110 = Full-Service Restaurants

Some library databases, books, and websites allow you to search using SIC and/or NAICS codes. It is very helpful to know what your industry code is before starting your research in Library and government resources. 

Industry Overviews

Additional Industry Databases

Industry Resources & Profiles

Industry Web Sources

​​​​​​​The Economic Census is the U.S. Government's official five-year measure of American business and the  economy. It is conducted by the U.S. Census Bureau in years ending in 7 and 12. Much of the information is also available via American Factfinder.

Company and Industry Databases

Databases For Company Specific Information
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