provides a detailed portrait of the nation's economy once every five years, from the national to the local level. Includes key industrial statistics such as the number of establishments, number of employees, payroll, and measure of output.

Replaced the U.S. Standard Industrial Classification (SIC) system in 1997 and is a 5 or 6-digit number. NAICS was developed jointly by the U.S., Canada, and Mexico to provide new comparability in statistics about business activity across North America.

Note: The North American Industry Classification System (NAICS) officially replaced the SIC system in 1997. Some of our business sources still feature SIC codes search options.

Complete description of NACE (Classification of Economic Activities in the European Community) and the corresponding codes of the ISIC (International Standard Industrial Classification).

Lists national classification schemes (mostly for activities and products) and provides basic information for many of them.