Google just launched a very useful feature that you should add to your bag of tricks.
Google Helps you Track the Unemployment Rate of US Cities
Here is a quote from their blog:
We just launched a new search feature that makes it easy to find and compare public data. So for example, when comparing Santa Clara county data to the national unemployment rate, it becomes clear not only that Santa Clara’s peak during 2002-2003 was really dramatic, but also that the recent increase is a bit more drastic than the national rate:
Here’s a video showing how it works: