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.