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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 other countries, e.g., by the United Kingdom's Companies House.^[1]

1. Sic Code
2. Sic Codes List Download

Use SIC and NAICS Codes to Find Customers or Identify Your Industry. Business Classification Specialists since 1998. Browse SIC and NAICS Codes. Use our free Standard Industrial Classification (SIC) Code lookup service to find your specific SIC Code by company name. Search by specific SIC Code or Keyword. Build your own highly targeted business mailing list from SIC or NAICS Codes.

In the United States the SIC code has been replaced by the North American Industry Classification System (NAICS code), which was released in 1997. Some U.S. government departments and agencies, such as the U.S. Securities and Exchange Commission (SEC), continued to use SIC codes through at least 2014.^[2]

The SIC code for an establishment, that is, a workplace with a U.S. address, was determined by the industry appropriate for the overall largest product lines of the company or organization of which the establishment was a part. The later NAICS classification system has a different concept, assigning establishments into categories based on each one's output.^[3][4]

The SIC codes can be grouped into progressively broader industry classifications: industry group, major group, and division. The first 3 digits of the SIC code indicate the industry group, and the first two digits indicate the major group. Each division encompasses a range of SIC codes:^[5][6]

Sic Code

To look at a particular example of the hierarchy, SIC code 2024 (ice cream and frozen desserts) belongs to industry group 202 (dairy products), which is part of major group 20 (food and kindred products), which belongs to the division of manufacturing.

Purpose[edit]

In the early 1900s, each branch of a United States government agency would conduct business analysis using its own methods and metrics, unknown and meaningless to other branches. 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.

Structure[edit]

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. For example, '36' refers to a business that deals in 'Electronic and Other Equipment.' Adding '7' as a third digit to get '367' indicates that the business operates in 'Electronic, Component and Accessories.' The fourth digit distinguishes the specific industry sector, so a code of '3672' indicates that the business is concerned with 'Printed Circuit Boards.'

Uses[edit]

The U.S. Census Bureau, Bureau of Labor Statistics, Internal Revenue Service and Social Security Administration utilize SIC codes in their reporting, although SIC codes are also used in academic and business sectors. The Bureau of Labor Statistics updates the codes every three years and uses SIC to report on work force, wages and pricing issues. The Social Security Administration assigns SIC codes to businesses based on the descriptions provided by employers under the primary business activity entry on employer ID applications.

Limitations[edit]

Over the years, the U.S. Census has identified three major limitations to using the SIC system. The first limitation surrounds its definition and mistaken classification of employee groups. For example, administrative assistants in the automotive industry support all levels of the business, yet the SIC defines these employees as part of the 'Basic Sector' of manufacturing jobs when they should be reported as 'Non-Basic.' Secondly, SIC codes were developed for traditional industries prior to 1970. Business has changed considerably since then from manufacturing-based to mostly service-based. As a result, and thirdly the SIC has been slow to recognize new and emerging industries, such as those in the computer, software, and information technology sectors.

History of the change to NAICS[edit]

The Office of Management and Budget, or OMB, was tasked with revising the SIC system to reflect changing economic conditions. The OMB established the Economic Classification Policy Committee in 1992 to develop a new system representative of the current industrial climate. The result was the North American Industrial Classification System, or NAICS, a collaborative effort between Canada, the U.S. and Mexico. NAICS expanded the four-digit SIC code to a six-digit code, and it provided more flexibility in handling emerging industries. The new code was implemented in Canada and the United States in 1997 and in Mexico one year later.

NAICS classified establishments (workplace) by their main output, instead of classifying them with the larger firm or organization of which the establishment was a part. This gives more precise information on establishment and worker activities than the SIC system, but changed the meaning of the classifications somewhat, making some time series of data hard to sustain accurately. Fort and Klimek (2016) found using longitudinal data on establishments that the switch from SIC to NAICS reclassified large numbers of workers differently by industry/sector than NAICS does, notably by reclassifying some from the Manufacturing sector into Services.^[3][4]

Sic Codes List Download

List of codes[edit]

The following table is from the SEC's website, which allows searching for companies by SIC code in its database of filings.^[7] The acronym NEC stands for 'not elsewhere classified'.

See also[edit]

• Industry information (industry classification)

References[edit]

1. ^'SIC 2007'. Retrieved 30 September 2014.
2. ^'North American Industry Classification System'. Retrieved 30 September 2014.
3. ^ ^abTeresa C. Fort and Shawn D. Klimek. 2016. The effect of industry classification changes on US employment composition. Technical report, Tuck School at Dartmouth.
4. ^ ^abBen Lipsius. 2018. Labor Market Concentration does not Explain the Falling Labor Share. 2018 Papers pli1202, Job Market Papers. REPEC/IDEAS site
5. ^'SIC Division Structure'. Retrieved 30 September 2014.
6. ^'The Entire SIC Code Listing - Free from EHSO'. Retrieved 30 September 2014.
7. ^'U.S. Securities and Exchange Commission SIC Code List'. Retrieved 30 September 2014.
8. ^'Standard Industrial Classification (SIC) System Search | Occupational Safety and Health Administration'. www.osha.gov. Retrieved 2017-03-01.

External links[edit]

• Bernard Guibert, Jean Laganier and Michel Volle, An Essay on Industrial Classifications, Économie et statistique n° 20, February 1971