From the US Census Bureau: 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.

How to add industry codesEdit

The official NAICS 2002 Codes may be found at:

http://www.census.gov/epcd/naics02/naicod02.htm.

The Standard SIC Codes may be found at:

http://www.osha.gov/pls/imis/sicsearch.html

Some standard NAICS codes:

Software Publishers: 51121

ISP: 518111

Web Search Portals: 518112