North American Industry Classification System
You are here: Census.gov › Business & Industry › NAICS
Introduction to NAICS
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.
NAICS was developed under the auspices of the Office of Management and Budget (OMB), and adopted in 1997 to replace the Standard Industrial Classification (SIC) system. It was developed jointly by the U.S. Economic Classification Policy Committee (ECPC), Statistics Canada 
, and Mexico's Instituto Nacional de Estadistica y Geografia , to allow for a high level of comparability in business statistics among the North American countries.
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. Additional information on the background and development of NAICS is available in the History section of this Web site.
Announcements
The revised 2022 NAICS Update Process Fact Sheet is now available [PDF, 146KB]The 2017 NAICS Manual is now available here to view or download
NAICS 2017 Revision is final
August 08, 2016 [PDF, 290KB] North American Industry Classification System—Revision for 2017; Notice. Vol. 81, No. 1522017 NAICS Structure [XLSX, 94KB]
2017 NAICS to 2012 NAICS [XLSX, 59KB]
2012 NAICS to 2017 NAICS [XLSX, 58KB]
August 04, 2015 [PDF, 325KB] North American Industry Classification System (NAICS) - Updates for NAICS 2017; Notice. Vol. 80, No. 149
August 08, 2014 [PDF, 292KB] 2017 North American Industry Classification System (NAICS) Revision - Notice Regarding Implementation of the Factoryless Goods Producer Classification in NAICS 2017; Notice. Vol. 79, No. 153
May 22, 2014 [PDF, 324KB] 2012 North American Industry Classification System (NAICS)—Updates for 2017; Notices. Vol. 79, No. 99
available 
