Houghton, MI

ZIP code 49931 is located in Houghton, Michigan, a small city in the Upper Peninsula. This area is home to Michigan Technological University, known for its engineering programs. The Keweenaw Waterway, a historic water route connecting two of the Great Lakes, also runs through this zip code. Additionally, the Quincy Mine, a former copper mine that now operates as a museum, is a significant landmark in the area.