Earthquake Lists and Maps. The page lists vast amounts of information for the US and the World on Earthquakes. Including: Deadly Earthquakes, Density Maps, General Information, Statistics, the Largest Earthquakes, Historic Earthquakes going back to 856AD.
Here is a fun little earthquake fact. From 1975 - 1995 there were only four states that did not have any earthquakes, florida, Iowa, North Dakota and Wisconsin.
Also included are the Last Earthquakes in each state and country, Seismicity Maps and the really big significant earthquakes. This is as great page for getting all kinds of information on earthquakes. You can also check out all kinds of other info on earthquakes at the USGS Earthquake sites.