Answered By: IESE Library
Last Updated: May 23, 2016     Views: 2463

Sector/Industry classifications are often used to divide companies into industry groups. SIC is the best known, and companies have a Primary SIC code, and additional secondary ones.

The main sector/industry classifications are:

SIC codes (US), or Standard Industrial Classification codes, are maintained by OSHA (older that NAICS but widely used).

NAICS codes (US), or North American Industrial Classification System codes, are maintained by the Census Bureau. You can search for 2002 or 2007 NAICS codes.

The NAICS Association maintains a NAICS and SIC lookup page where you can look up an industry by either code, or both codes by industry name.

Other Industrial classification webpages:

Commodity Translation Wizard - ITC DataWeb - HTS and SIC, SITC, NAICS.

Harmonized Tariff Schedule of the United States


Industry Concordance - Jon D. Haveman.

ISIC - International Standard Industrial Classification on all Economic Activities by the United Nations Statistics Division.

NACE codes Classification of Economic Activities in the European Community.

The UN has a Table of national classifications.

Go to the BERA - Business & Economics Research Advisor site.

Other classifications such as ICB and GICS are used to classify companies stocks on a market:

GICS The General Industry Classification System (GICS), is joint system by MSCI and Standard and Poors (S&P).

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