This site contains extensive statistical information on the banking system in the U.S., as well as more general information on the FDIC and the banking system, some of which will be of interest to the general public. The latter includes publications from the FDIC's Corporate Library, the Division of Research and Statistics Banking Review, and specific information for consumers. There are also press releases (which are also available via a mailing list; see that section of this guide).
There are several types of statistical information. They include "Statistics on Banking," "Historical Statistics on Banking," "Quarterly Banking Profile," and the "FDIC Institution Report."
Some of this material is on their gopher, but there are direct links to it from their web site.
http://www.fdic.gov/
gopher://gopher.fdic.gov
ftp://ftp.fdic.gov