FRED - Federal Reserve Economic Data
Download, graph, and track 61,000 US and international time series from 48 sources. From the Federal Reserve Bank of St. Louis. Includes a range of U.S. and international economic data (price indexes, exchange rates, interest rates, GDP, trade balances, etc.). Useful features include easy browsing for U.S. regional data (states, MSAs, counties, BEA regions, Fed districts, Census divisions) and links to Liber8, the Fed's portal to current economic indicators, research and recent reports.