Various Minneapolis and St. Paul bars and breweries
Minnesota Institute for Astrophysics (U of M) graduate students
Astronomy on Tap Twin Cities
Run by astrophysics grad students, this is casual astronomy in a bar: short, lively talks about black holes, exoplanets, and the universe, with plenty of beer and trivia mixed in. Events move around to different Twin Cities breweries and taprooms, so check their social channels for the next one. It is free, unpretentious, and a great low-key intro to real science from the people doing it.