Just a quick post, I received an email from Ed regarding a US Carbon Footprint Map, an interactive United States Carbon Footprint Map, illustrating the greenest states & cities. The site has all sorts of stats on individual state & city energy consumptions, demographics and state energy offices, state taxes and more down to the local US city level.
The interactive map itself is further down the page, tables explaining the data are at the top. When clicking on the map you can click through to further details, such as for California that contains an impressive level of data. Worth a look, especially if you live in the US.