FRED, the main economic database of the Federal Reserve Bank of St. Louis

To access data in FRED, the main economic database of the Federal Reserve Bank of St. Louis,  go to http://research.stlouisfed.org/fred2.
 
If you want to map FRED data, go to GeoFRED at http://geofred.stlouisfed.org.
 
To compare vintage data with the latest numbers, use ALFRED athttp://alfred.stlouisfed.org.
 
For data on banking competition, use CASSIDI at http://cassidi.stlouisfed.org.
 
And for data and primary source documents related to the economic history of the U.S., including the history of the Federal Reserve System, use FRASER athttps://fraser.stlouisfed.org. 
 
All of these services – and more – are free from the St. Louis Fed.