Physician's Weekly's most recent poster has an infographic on rates of diabetes by state. That one is still behind the wall so I can't post it, but it's pretty similar to this one from 2007.
This is largely a map of percentage black or hispanic by state. Not entirely - West Virginia is a notable outlier there - but the dramatic coloring would be milder if we allowed for that. In fact, the dramatic coloring is itself pretty deceptive anyway. From 12th place to 45th is only a swing from 7.8% to 5.8% (more recent numbers and a slightly different definition).
I think that's ultimately unfair and even dangerous to African-Americans and Hispanics. Less so to whites, but them also. The idea that where you live (with all the hidden assumptions about culture) is a big part of the problem isn't going to help you much. I have been hearing good PSA's quite explicitly reminding AA's that they have a higher risk, but then memorable visuals like this one undo that good.
Food culture is different by region, and that is indeed a real thing being measured here. But genetics seems to play a larger role, which you would never dream if you just looked at the map.