Forbes looks into population migration trends with some neat graphics: Ten American Comeback Cities. The data for Allegheny County seems to be popping out for them.
We’ve been parsing the IRS migration long time.. I have some reports back to the 1980’s, but with the data becoming more accessible you see more and more folks looking at it like this. Still if you want more on the data compiled at a metropolitan level for Pittsburgh the latest is what I compiled last year in this report which already had its news cycle fwiw… still good to see the national perspective.