
FirstGov.gov for Business – U.S. Government repository of Web-based information that includes business filings on-line (registration, tax, contract, employer, etc.), business information by topic (from Big Business to Workplace Issues), business information by audience (small business, exporters, etc.), and a library.
Bureau of Labor Statistics – Statistics on the economy, demographics, employment, towns, states, companies, the employed, employers, occupations ( Occupational Outlook Handbook), etc. The site includes the Consumer Price Index and Import/export Price Index, as well as many other indicators.
Department of Commerce – Information on economic development, manufacturing statistics by industry, and international trade.
Census Bureau – Statistics on people, business, geographical sectors, etc. State, county and town profiles are available, as well as maps.
Treasury Bills and Rate History – Bureau of the Public Debt tracks the public debt and helps you track securities. Savings bonds information comes with a free Savings Bond Wizard that can help you keep track of your bonds and they're value. TreasuryDirect allows you to buy and hold T-bills, notes or bonds. There’s much more information about upcoming auctions, past auctions, and more.
U.S. Patent and Trademark Office -- USPTO patent and trademark search site from 1976 to the present. This site also offers forms and information on patents, trademarks, law and legal issues, etc.
Environmental Protection Agency's Envirofacts Warehouse – Facts on waste, water, toxics, air, land, radiation, compliance, etc.
Securities and Exchange Commission -- Edgar Database and 10K (annual reports), etc. This site discloses basic information on all U.S. public companies.
OSHA – Information on occupational safety and health law, standards, hazards, training, consultation, etc.