Yip
I live in Minnesota, which has a bit of it that is connected by land to Canada and only by water to the rest of the United States. Though the water freezes in winter and so sometimes one can traverse it by land vehicle, I think. I’ve never been anywhere near there. (I do not travel a lot within it, despite living in the state over 30 years. It is pretty big.)
This part of Minnesota is called the 'Northwest Angle'. it's called an 'exclave'. (If you are Canadian, it's a US enclave!)
You either have to take a boat across Lake of the Woods, or drive through Manitoba. It's pretty large at 123 square miles (318 KM squared).