Houghton, MI is a city located in Houghton County, Michigan and has a land area of 26.36 square miles (68.27 km2). The water area for the city is 2.75 square miles or 7.12 km2. There is one unique zip code in Houghton, Michigan and it is 49931. The area code(s) for Houghton is 906.
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