Mountain Iron is a city in Saint Louis County, Minnesota, United States, in the heart of the Mesabi Range. The population was 2,878 at the 2020 census.
U.S. Highway 169 serves as a main route in Mountain Iron.
The city's motto is "Taconite Capital of the World". The local mine, Minntac, is owned by the United States Steel Corporation (U.S. Steel).
Mountain Iron is part of the Quad Cities, with Virginia, Eveleth, and Gilbert.
History
Mountain Iron was founded in 1892 as a mining village in the former Nichols Township. It was named after the nearby Mountain Iron Mine.
Mountain Iron was incorporated as a city in 1972.
thumb|alt=two brick buildings from the early twentieth century|upright=1.3|Mountain Iron power plant building and village hall building (2020)
Geography
According to the United States Census Bureau, the city has an area of ; is land and is water.