"Interestingly, Iowa, which people on the coasts would probably lump together with Oklahoma as low cost of living flyover states, has very high state taxes. 8.9

"Interestingly, Iowa, which people on the coasts would probably lump together with Oklahoma as low cost of living flyover states, has very high state taxes. 8.98% on earnings above $70,785." True, though so far, at least, I think that's still balanced by being able to deduct federal income tax when figuring what you owe the state. I recall that there's a move to get rid of that deduction.