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North American Industry Classification System (NAICS)

The North American Industry Classification System (NAICS) has replaced the U.S. Standard Industrial Classification (SIC) system. NAICS will reshape the way we view our changing economy.

NAICS was developed jointly by the U.S., Canada, and Mexico to provide new comparability in statistics about business activity across North America.

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NAICS 2007 includes revisions to NAICS 2002 across several sectors. The most significant revisions are in the Information Sector, particularly within the Telecommunications area.

The North American Product Classification System (NAPCS) is now available for products of service industries (sectors 51-81). (NAPCS will focus on manufacturing products at a later date; for existing census codes, see the Numerical List.)

The printed 2007 NAICS Manual is now available. See below.

NAICS Manual coverThe official 2007 US NAICS Manual  North American Industry Classification System--United States, 2007 includes definitions for each industry, tables showing correspondence between 2007 NAICS and 2002 NAICS for codes that changed, and a comprehensive index--features also available on this web site. To order the 1400-page 2007 Manual, in print, call NTIS at (800) 553-6847 or (703) 605-6000, or check the NTIS web site. The 2002 Manual, showing correspondence between 2002 NAICS and 1997 NAICS, and the 1997 Manual, showing correspondence between 1997 NAICS and 1987 SIC, are also available.

The following 2007 NAICS files are currently available for downloading in spreadsheet form: 2007 NAICS codes--2- through 6-digit; 2007 NAICS codes--6-digit only; and correspondence table for those industries that changed: 2007 NAICS to 2002 NAICS and 2002 NAICS to 2007 NAICS. A revised NAICS search incorporating the 2007 NAICS codes will be available in the near future.

Also available at this site are lists of 2002 NAICS codes (with links to definitions), 1997 NAICS codes, tables showing correspondence between NAICS 97 and SIC, tables showing correspondence between NAICS 97 and NAICS 02, and other files for downloading.

A summary of NAICS supporting documents cites Federal Register Notices, issues papers, and other reports about NAICS.

NAICS was developed in cooperation with the US Economic Classification Policy Committee, Statistics Canada, and Mexico's Instituto Nacional de Estadistica, Geografia e Informatica.

Last revised: March 28 2008