Houghton is the largest city in and the county seat of Houghton County in the U.S. state of Michigan. Located on the Keweenaw Peninsula, Houghton is the largest city in the Copper Country region. It is the fifth-largest city in the Upper Peninsula, with a population of 8,386 according to the 2020 United States census. Houghton is the principal city of the Houghton micropolitan area, which includes all of Houghton and Keweenaw counties. Houghton lies upon the Keweenaw Waterway, a partly natural, partly artificial waterway connecting at both ends to Lake Superior. Across the waterway from Houghton lies the city of Hancock.