New migration data
Note for the overly wonked. This is all from ACS data; so still not the IRS county to county migration data which has yet to be released for 2011 even. So more than a year behind what was the typical schedule through the last decade. They say it still is coming someday, though I have not heard any specific timeline.
However, new tool is neat and you can zoom in. What I don't quite get is that Allegheny county appears to be a net gainer of population from the center of shale development in other parts of the state.