Bureau of Economic Analysis
Find information on such issues as economic growth, regional economic development, inter-industry relationships, and the nation's position in the world economy.
Bureau of Justice Statistics
Data on crime, criminal offenders, victims of crime, and the operation of justice systems at all levels of government.
Bureau of Labor Statistics
Labor markets, working conditions, and price changes in the economy.
Bureau of Transportation Statistics
Access to data on all types of transportation. Examples include incident reports, tonnage, trucking, railroads etc.
Census Bureau
Extensive collection of statistical reports and data about the U.S. population, demographics, businesses and economics.
Data.gov
Search and download data sets generated by Executive Branch agencies.
Economic Research Service
Statistics related to agriculture, food, the environment, and rural development.
Energy Information Administration
Data products covering energy production, imports, exports and prices. Includes many articles that are published by EIA.
National Agricultural Statistics Service
Statistics covering just about every aspect of U.S. agriculture including prices, production, demographics, exports etc.
Securities & Exchange Commission
Find company filings including 10-K's, 8-K's and proxies. This will be important for building a report of potential competitor's, supplier's and consumer's of your product/service.
Go to Filings>Company Filing Search
Small Business Administration
Tons of information regarding all aspects of starting a business: creating a business plan, launching your business, running day-to-day operations and expanding your business.
Thomasnet
Provides information on suppliers/manufacturers of end products and component parts. This is is free service, but you will have to provide minimal information in order to view the search results.
USA.gov Small Business
Data by topic including economics, housing, demographics, health etc.