The North American Industry Classification System (NAICS) is a numerical classification system used to group/classify like companies into industries for the purpose of collecting, analyzing and publishing statistical data related to the business economy. It represents a collaboration between the governments of Canada, Mexico and the United States stemming from the North American Free Trade Agreement (NAFTA). It categorizes narrowly defined economic activities, or industries, in a consistent manner among the the three trading partners, although the system does leave room for fine level customization with each country. For more information, see the U.S. Census Bureau e-tutorial on NAICS.
Example of NAICS Classification by Digit Level:
The following websites can be used to identify appropriate NAICS codes:
Company Profiles may also be used to identify the NAICS code(s) for any industries in which a company may operate.