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There are two classification systems used to classify business establishments for collecting and analyzing statistical data. Many databases use both. NAIC codes are often more specific, but SIC codes can be used for historical comparisons.
North American Industry Classification System (NAIC Codes)
The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.
Standard Industrial Classification System (SIC)
SIC are four-digit numerical codes assigned by the U.S. government that categorize the industries to which companies belong, while also organizing industries by their business activities.
Databases best for Industry Information
Business Source Elite
Full-text coverage of scholarly journals and trade publications on business, management, economics, finance, banking, accounting, marketing, and much more. Regional business news is also included.
Dun & Bradstreet Key Business Ratios
Provides immediate online access to competitive benchmarking data. This powerful tool lets researchers examine industry benchmarks compiled from D&B®’s database of public and private companies, featuring 14 key business ratios (users choose a one-year or three-year set of ratios) for public and private companies in 800 lines of business.
Simplify complex financial information and decisions so that our readers have the confidence to manage every aspect of their financial life. This company aims to ensure that all of the articles are empowering, unbiased, accurate, and inclusive.
Provides access to 15,000 news, business and legal sources; including business information on more than 80 million U.S. and international companies and executives and U.S. Supreme Court decisions since 1790. Some publications include: The New York Times, USA Today, The Christian Science Monitor, The Philadelphia Inquirer, and more!
OSHA Data and Statistics
Go here for government data from the Occupational Safety and Health Administration