Where does Michigan’s Up North start? If you know, you know Let’s stop debating this already Published: Updated: Tags: Every summer, Michiganders debate the same topic online: Where does Up North start? Back in 2019, The Zilwaukee Bridge. Other top answers included West Branch, the Grand Rapids-Flint line, past the Thumb and even the Mackinac Bridge. But the more and more I think about this, I have realized that this isn’t a debate. There is no right answer. The correct answer is inside of you. I think this really comes down to where you’re traveling Up North from, right? I’m in Detroit, so hitting the Zilwaukee Bridge does make me feel like I’ve entered Up North. But if you’re from, let’s say, Northern Oakland County, maybe West Branch is a better answer for you.