All databases are .
Bureau of Economic Analysis (BEA) Provides industry data as well as other economic indicators.
CNN Money.com Business and economic news and company information.
County Business Patterns Some basic industry information on the county level is available here.
Economic Census Provides industry and economic information on the national, state, and local level. Most sections updated every 5 years, though some are updated annually.
Yahoo Finance Business and economic news and company information.