IBISWorld is a powerful database that provides industry reports and information.
These are other databases that contain industry information, sometimes as a secondary feature. Statista is a good follow-up to IBISWorld, and contains numerous statistical information on industries and products.
What are industry classification codes? They are codes created by the US government used to collect industry-wide statistics. Many reference sources use them as a way to organize industry and company information. NAICS replaced SIC in 1997, but some sources use both, some still use SIC only
North American Industry Classification (NAICS)
Created by the Census Bureau in 1997, NAICS replaced the SIC. Each industry is assigned a unique number is a code used to identify and describe North American (US, Canada, and Mexico) industures. It is hierarchical and classifies each industry by broad group and then subdivides each into smaller, more specific classifications.
Standard Industrial Classification (SIC)
SIC system used to describe the structure of American industries. A hierarchical system, industries are organized into broad industry groups and then subdivided into smaller groups. Each industry carries a unique four-digit classification code ranging from 0100 to 9999. The SIC was replaced in 1997 with the North American Industrial Classification System but many sources still use the SIC.