Library Guide for Illinois Sustainable Technology Center (ISTC) Staff

These tables provide detailed descriptions of the direct relationships between NAICS and SIC classification systems, as well as the relationships between different versions of NAICS.

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. This official U.S. Government Web site provides the latest information on plans for NAICS revisions, as well as access to various NAICS reference files and tools.

ECHO includes NAICS information for companies listed in the database.

Provides an overview of the process for searching company information.

Videos include: Intro to Business Research; ABI Inform; PrivCo; Nexis Uni; Hoover's; Statista; and Corporate Affiliations.

A guide from the STEM & Entrepreneurship program. Includes a comparison of the content of different databases that contain company information as well as help with searching specific databases.