Department of Labour
This is a service provided by the U.S
Department of Labour that contains the entire SIC code manual.
Standard Industrial Classification Codes (SIC Codes) are
numerical codes designed by the U.S. Government in order
to create uniform descriptions of business establishments.
SIC codes can be used to bring together companies
that produce similar products or services. SIC Codes are
arranged in a very structured, hierarchical manner :
The first digit designates a major Economic
Division, such as Agriculture or Manufacturing.
The second digit designates an Economic
Major Group, such as Crop Production.
The third digit designates an Industry Group,
such as Grains or Fruits.
The fourth digit fine tunes the hierarchical
structure into a specific Industry.