Marquette, city (1990 pop. 21,977), seat of Marquette co., N Mich., Upper Peninsula, on Lake Superior; settled 1849, inc. as a city 1871. It is a shipping center for a lumber, farm, and resort region. Chemicals, wood products, and mining machinery are manufactured. Marquette is the seat of Northern Michigan Univ. A maritime museum and a state prison are also there.