Minnesotan here. Minnesota is in the midwest if that's the question you're asking. Minnesota is chock full of proud northerners who have nothing to do with the midwest if you're asking that question instead.
One thing I can say about Minnesotans is that we're culturally odd.
We'll take care of eachother, but don't expect pleasant hellos and conversations with anyone. There are a lot of people that hunt, not a lot of people that hunt well or frequently. The Mall of America isn't as awesome as when you were a kid. The death of Prince was a State Tragedy. To outsiders, no, Minnesota does not consist of Duluth, the Twin Cities, and snow filled cornfields. Yes it's too damn cold. Yes it's too damn warm for this time of the year. No we won't quit complaining either way. Say yes to lefsa. Always safe with a caserol at a dinner party.
Never state something in a way that conveys your opinion or feelings too strong. That's rude. Never stand too close to or facing straight towards people in a conversation. That's rude. Don't get too involved. That's rude.
Do smile and raise a hand when you see someone you might know, or someone who does it to you regardless if you can identify them or not.
Skol!
Edit: So I asked my brother, and while he too was aware of hotdish being the correct entrée for a combination of ingredients baked in a pan, he also defaults to caserol. I think it's because our parents and extended family do not live here. For those confused, tater tot hotdish != tater tot caserol