Many government agencies at federal, state and local level are required to collect data. Generally any data and information acquired from these governmental sources is considered to be credible from a research perspective.
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.
Provides standard or customized demographic consumer or business information using survey data from the U.S. Census, EASI, and Simmons (including Experian's Mosaic Lifestyles groupings), presented, by comparison, ranking, or summary.