For several years, I have been saying that journalists write as if the "white working class" is found somewhere out in the Midwest. It occurred to me that there was a way to check on my impression--search for news stories that included "white working class" and the name of a particular state. I did that for stories in the New York Times for the last 12 months. Many of the mentions of states are incidental--for example, this story is mostly about the views of some Democratic politicians in Ohio about how to win back the white working class, but it says "it's not enough for new national Democratic Party Chairman Tom Perez to tell voters, as he did recently in New Jersey, that Trump and Republicans don't care about them," so I count it for both Ohio and New Jersey.
Some states in the Northeast:
New Jersey 24
New Hampshire 38
Pennsylvania, which could be regarded as split between the Northeast and the Midwest, has 93. My impression is that almost all of them are about the part of the state from Allentown and Scranton on west, but I didn't check that. Moving on to the Midwest:
West Virginia 20
The Midwestern states got substantially more mentions in conjunction with "white working class" than the Northeastern ones did. In some cases, that might be because they were "battleground" states or unexpected wins for Trump, but Ohio was a pretty safe Republican state in this election, and West Virginia, which was a lock for Trump, got twice as many mentions as Maine, which was competitive.
I also tried three large states from various parts of the country:
Those were higher than I expected, but the Midwest is still over-represented relative to its population--the combined total for California, Texas, and Florida is below the total for Ohio and Michigan or Ohio and Wisconsin. So my impression seems to have been correct.
Note: I left out New York because many of the mentions were for the New York Times, and Indiana and Vermont because stories might mention Mike Pence or Bernie Sanders and include their state in describing them.
[Thanks to Robert Biggert for inspiring this post]