County level unemployment rates from January 2007 to the latest numbers for May 2010

The change month-by-month is available here. This really makes one realize that the unemployment rate was just 5.6 percent in November, 2008; 6.3 percent in February, 2009 when the stimulus passed; and now the national rate is now 9.5 percent. Note that these are apparently unweighted county averages. The actual national unemployment rate was 6.9 percent in November, 2008; 8.2 percent in February, 2009; and 9.7 percent in May, 2010.

Thanks to Lonan Dubh for the link.