IRON MOUNTAIN, a city of Michigan, U.S.A., on the west ern edge of the Upper Peninsula, near the Wisconsin State line (the Menominee river), at an altitude of ,I6oft. ; the county seat of Dickinson county. It is on Federal highway 2, and is served by the Chicago and North Western, the Chicago, Milwaukee, St. Paul and Pacific, and (for freight only) the Wisconsin and Mich igan railways. The population was 8,251 in 192o (3o.5% f oreign born white) and was 11,652 by the Federal census of 193o. The
Chapin mine, employing 700 men, and other rich iron mines, are in the vicinity ; and the Ford Motor company has mines, lumber mills and plants here, with an aggregate force of about 2,500. Iron Mountain was settled in 1879 and incorporated in 1887. When the first train came in ( July 188o) the population was 150, and by 1887 it had grown to 8,000.