Standard Industrial Classification Codes (SIC Codes)
Standard Industrial Classification codes are four-digit codes used to classify economic activities in a hierarchical code structure by division, major group, and specific industry. An eight-digit version of the codes is also used by private industry to identify a line of business at a more specific level.
Search by SIC Code or keyword to find a 4-digit or 6-digit industry code.
The SIC code structure was last revised in 1987 and is gradually being phased out in favor of the North American Industry Classification System; however, certain government departments and agencies such as the U.S. Securities and Exchange Commission (SEC) still use the SIC codes.
North American Industry Classification System (NAICS Codes)
The six-digit North American Industry Classification System codes classify economic activities into twenty industry sectors, with the six-digit hierarchical code structure allowing greater classification flexibility than the four-digit structure of the Standard Industrial Classification Codes (SIC Codes).