According to the timer at the Census in Schools site, the 2010 US Census is only 154 hours, 22 hours, 48 minutes and a few seconds away. And I know that you have been anxiously awaiting the release of Census-related teacher materials, lessons and maps!
Well . . . wait no further.
Travel over to Census in Schools and find a nice selection of grade-appropriate teaching tools that you can use in a variety of content areas, obviously including geography and history. But you can also find stuff for reading, writing and math. The site has a nice interactive page for grade school kiddos and some very nice maps for your older students.
All in all, a nice use of my tax dollars.