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MKTG 340 Marketing Research: Industry Classification

This guide includes resources for researching companies and industries and is the course guide for MKTG 340, Marketing Research.

What is a NAICS Code?

The North American Industry Classification System is used to organize industry information. It's designed to produce common industry definitions for Canada, Mexico, and the United States. It is a hierarchical classification system, offering five levels of detail.

Industries are represented by a six-digit number. The first two digits designate the economic sector: manufacturing, agriculture, wholesale, retail, professional services, etc. The subsequent digits designate subsectors and industry groups.

Each digit in the code is part of a series of progressively narrower categories.

Example:

44 - Retail

448 - Clothing and Clothing Accessories Stores

4481 - Clothing Stores

448140 - Family Clothing Stores

The Standard Industrial Classification, an earlier U.S. system, is still used by some sources.

  Industry Codes & Classification

Finding Industry Information by NAICS

Government agencies and business information providers use NAICS to organize industry information. In addition to the links below, you can search several business databases by NAICS and/or SIC codes for industry information.

Find Industry Codes and Ratios for a Company

Note that companies that do more than one type of business will have multiple codes.