Minnesota has the largest deposits of iron ore.

The greatest iron ore resources in the United States are found in Minnesota, specifically in the Mesabi Range in the state's northern region. For more than a century, the Mesabi Range has been an essential supply of iron ore, making a substantial contribution to the country's steel output. Minnesota is a major player in the iron ore business in the United States because of the high-quality taconite, a form of iron ore that is found here, which is processed and used to make steel. Both local economies and the larger industrial sector continue to benefit from the state's iron ore mining.