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The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy. This official U.S. Government Web site provides the latest information on plans for NAICS revisions, as well as access to various NAICS reference files and tools.
The official 2007 U.S. NAICS Manual, includes definitions for each industry, background information, tables showing changes between 2002 and 2007, and a comprehensive index. The official 2007 U.S. NAICS Manual is available in print and on CD_ROM from the National Technical Information Service (NTIS) at (800) 553-6847 or (703) 605-6000, or through the NTIS Web site. Previous versions of the NAICS Manual are available.