Industry codes (NAICS, SIC) are hierarchic, numeric schemes to define and distinguish one industry from another. Industries are grouped by similar production process. NAICS codes are most frequently used, though some publishers use SIC codes. About Industry Classification Codes
Industry information is found in trade journals, association websites, industry/investment analysts’ reports, nonprofit and government information sources (eg. EPA Industry Letters, EIA reports, Economic Census), market research reports, and commercial industry reports.
For industry research, one needs essential facts as well as in-depth analysis. Read trade journals that focus on the industry. Consult industry association publications, websites and datacenters for the data compiled about their industry.
US Census Bureau Economic Programs includes the following:
Data.gov - Search across all federal statistical agency datasets.
Statistical Abstracts from 1879-2010 available here.
Links to Statistical Agencies (US agencies, national agencies of other countries, and International)
US Census Bureau’s provides composite quarterly ratios for manufacturing, mining, wholesale and service industries.
RMA Annual Statement Studies. Financial Ratio Benchmarks. AnnualBased on financial statements submitted to banks, composite financial and operating ratios for mfg., wholesale, retail, service industries. 750+ lines of business are covered. Upper quartile, median and lower quartile values are presented. Explanations of balance sheet and income data, definitions of ratios, and sources of financial information for industries not covered.
Almanac of Business and Industrial Financial Ratios. Compiled from tax returns submitted to the
Industry Norms and Key Business Ratios. Financial and operating ratios for 800 lines of business. Balance sheet and income statement information and 14 financial ratios. More lines of business covered.