Correct, about 330M acres of farmland. Lol, I wouldn't call all 330M prime. Maybe 180-200M are 'prime'. The North Dakota, South Dakota, Kansas acres aren't going to win many 'prime' contests. They can produce a profit, yes. But no always a big one
You sure about those examples? I just pulled up the USDA soil survey of some place I've never been, Edmunds County S.D., and it looks to me like over one third of the county is capability class 2 or better, which is considered "prime farmland" or better.
I don't believe that is correct. This classification system considers both. To be in class I or II you need either no or "slight climatic limitations". I found another document that says N.D. has 47% of its area as either classes I or II, making it the third-most-arable state after Iowa and Illinois.
