Standard Industrial Classification

The Standard Industrial Classification (SIC) is a system for classifying industries by a four-digit code. Established in the United States in 1937, it is used by government agencies to classify industry areas. The SIC system is also used by agencies.

In the United States, the SIC code has been replaced by the North American Industry Classification System (NAICS code), which was released in 1997. However the SIC code is still widely.

In the 1930s, the government needed standardized and meaningful ways in which to measure, analyze and share data across its various agencies. Thus, the Standard Industrial Classification system was born. SIC codes are four-digit numerical representations of major businesses and industries. SIC codes are assigned based on common characteristics shared in the products, services, production and delivery system of a business.

SIC codes have a hierarchical, top-down structure that begins with general characteristics and narrows down to the specifics. The first two digits of the code represent the major industry sector to which a business belongs. The third and fourth digits describe the sub-classification of the business group and specialization, respectively. The fourth digit distinguishes the specific industry sector.

Relationship

erDiagram
    Division ||--o{ Group : Has
    Division {
        char code
        str name
    }
    Group ||--o{ Industry : Has
    Group {
        int id
        str name
        char division_code
    }
    Industry ||--o{ SIC : Has
    Industry {
        int id
        str name
        int group_id
        }
    SIC {
        int id
        str name
        int industry_id
        }

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Files

File Name	Description
division.txt
group.txt
industry.txt
sic.txt

Data Source

The data for this application was parsed from the Department Of Labor website:http://www.osha.gov/pls/imis/sic_manual.html