The SIC system was used throughout the federal government to group establishments into industries. The SIC Division Structure collected and calculated establishment data by broad industrial divisions (labeled A through K), industrial groups (the 2-and 3-digit SIC levels), and specific industries (the 4-digit level). The SIC System has been replaced by NAICS, the North American Industry Classification System (see above).
provides information on different industries and products, and classifies economic characteristics of industrial, commercial, financial and service organisations (155)
A hierarchical classification system that defines all establishments to a specific industry based on their primary output or product.