"North Central" is what professional linguists call the Minnesota accent. If you saw "Fargo" you probably didn't think the characters sounded very out of the ordinary. Outsiders probably mistake you for a Canadian a lot.
I just tested my brain here and I'm apparently in possession of a brain that's average, which doesn't really help the ego or sense of superiority much, but okay. The attention test got me but I did pretty decent on the other two tests. However, in the interests of preserving my fragile sense of self, I'm not posting my scores here.