A U.S. system for classifying economic activity; superceded by the North American Industry Classification System (NAICS).
An official website of the United States government
Page last modified on 4/13/18
An official website of the United States government
Due to a lapse in appropriations, this website is not being updated.
A U.S. system for classifying economic activity; superceded by the North American Industry Classification System (NAICS).